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180490030 = 2573101521
BaseRepresentation
bin10101100001000…
…00111100101110
3110120121211202221
422300200330232
5332201140110
625524305554
74321066000
oct1260407456
9416554687
10180490030
1192977916
12505422ba
132b515c46
1419d84370
1510ca37da
hexac20f2e

180490030 has 64 divisors (see below), whose sum is σ = 383356800. Its totient is φ = 61152000.

The previous prime is 180490019. The next prime is 180490031. The reversal of 180490030 is 30094081.

It is a junction number, because it is equal to n+sod(n) for n = 180489977 and 180490004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180490031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 346170 + ... + 346690.

It is an arithmetic number, because the mean of its divisors is an integer number (5989950).

Almost surely, 2180490030 is an apocalyptic number.

180490030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

180490030 is an abundant number, since it is smaller than the sum of its proper divisors (202866770).

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

180490030 is a wasteful number, since it uses less digits than its factorization.

180490030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650 (or 636 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 180490030 is about 13434.6577924412. The cubic root of 180490030 is about 565.1335262767.

The spelling of 180490030 in words is "one hundred eighty million, four hundred ninety thousand, thirty".

Divisors: 1 2 5 7 10 14 35 49 70 98 101 202 245 343 490 505 521 686 707 1010 1042 1414 1715 2605 3430 3535 3647 4949 5210 7070 7294 9898 18235 24745 25529 34643 36470 49490 51058 52621 69286 105242 127645 173215 178703 255290 263105 346430 357406 368347 526210 736694 893515 1787030 1841735 2578429 3683470 5156858 12892145 18049003 25784290 36098006 90245015 180490030