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155130630 = 235192311833
BaseRepresentation
bin10010011111100…
…01101100000110
3101210220110012220
421033301230012
5304203140010
623220553210
73562405614
oct1117615406
9353813186
10155130630
117a626a36
1243b52806
13261a7295
14168626b4
15d944970
hex93f1b06

155130630 has 64 divisors (see below), whose sum is σ = 408983040. Its totient is φ = 37483776.

The previous prime is 155130589. The next prime is 155130631. The reversal of 155130630 is 36031551.

155130630 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 155130630.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155130631) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7194 + ... + 19026.

It is an arithmetic number, because the mean of its divisors is an integer number (6390360).

Almost surely, 2155130630 is an apocalyptic number.

155130630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 155130630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (204491520).

155130630 is an abundant number, since it is smaller than the sum of its proper divisors (253852410).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155130630 is a wasteful number, since it uses less digits than its factorization.

155130630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11885.

The product of its (nonzero) digits is 1350, while the sum is 24.

The square root of 155130630 is about 12455.1447201548. The cubic root of 155130630 is about 537.3193970481.

The spelling of 155130630 in words is "one hundred fifty-five million, one hundred thirty thousand, six hundred thirty".

Divisors: 1 2 3 5 6 10 15 19 23 30 38 46 57 69 95 114 115 138 190 230 285 345 437 570 690 874 1311 2185 2622 4370 6555 11833 13110 23666 35499 59165 70998 118330 177495 224827 272159 354990 449654 544318 674481 816477 1124135 1348962 1360795 1632954 2248270 2721590 3372405 4082385 5171021 6744810 8164770 10342042 15513063 25855105 31026126 51710210 77565315 155130630