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130621480 = 235112831049
BaseRepresentation
bin1111100100100…
…10000000101000
3100002210020222121
413302102000220
5231414341410
620543401024
73144156433
oct762220050
9302706877
10130621480
1167806940
12378b3174
13210a5622
14134c281a
15b7029da
hex7c92028

130621480 has 64 divisors (see below), whose sum is σ = 322056000. Its totient is φ = 47285760.

The previous prime is 130621471. The next prime is 130621501. The reversal of 130621480 is 84126031.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123996 + ... + 125044.

It is an arithmetic number, because the mean of its divisors is an integer number (5032125).

Almost surely, 2130621480 is an apocalyptic number.

130621480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 130621480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161028000).

130621480 is an abundant number, since it is smaller than the sum of its proper divisors (191434520).

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

130621480 is a wasteful number, since it uses less digits than its factorization.

130621480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1354 (or 1350 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 130621480 is about 11428.9754571440. The cubic root of 130621480 is about 507.3856731639.

The spelling of 130621480 in words is "one hundred thirty million, six hundred twenty-one thousand, four hundred eighty".

Divisors: 1 2 4 5 8 10 11 20 22 40 44 55 88 110 220 283 440 566 1049 1132 1415 2098 2264 2830 3113 4196 5245 5660 6226 8392 10490 11320 11539 12452 15565 20980 23078 24904 31130 41960 46156 57695 62260 92312 115390 124520 230780 296867 461560 593734 1187468 1484335 2374936 2968670 3265537 5937340 6531074 11874680 13062148 16327685 26124296 32655370 65310740 130621480