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130938885 = 325711233153
BaseRepresentation
bin1111100110111…
…11100000000101
3100010101101101100
413303133200011
5232010021020
620554250313
73146651010
oct763374005
9303341340
10130938885
1167a03360
1237a26999
1321186c3c
1413566377
15b766a90
hex7cdf805

130938885 has 192 divisors, whose sum is σ = 310542336. Its totient is φ = 49420800.

The previous prime is 130938833. The next prime is 130938887. The reversal of 130938885 is 588839031.

It is not a de Polignac number, because 130938885 - 211 = 130936837 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 130938885.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130938887) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 2470519 + ... + 2470571.

It is an arithmetic number, because the mean of its divisors is an integer number (1617408).

Almost surely, 2130938885 is an apocalyptic number.

130938885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

130938885 is an abundant number, since it is smaller than the sum of its proper divisors (179603451).

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

130938885 is a wasteful number, since it uses less digits than its factorization.

130938885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136 (or 133 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The square root of 130938885 is about 11442.8530096301. The cubic root of 130938885 is about 507.7963163947.

The spelling of 130938885 in words is "one hundred thirty million, nine hundred thirty-eight thousand, eight hundred eighty-five".