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130457172 = 22310871431
BaseRepresentation
bin1111100011010…
…01111001010100
3100002110220121010
413301221321110
5231344112142
620540052220
73142603416
oct761517124
9302426533
10130457172
116770444a
1237834070
13210488c1
141347c9b6
15b6bde9c
hex7c69e54

130457172 has 12 divisors (see below), whose sum is σ = 304400096. Its totient is φ = 43485720.

The previous prime is 130457161. The next prime is 130457177. The reversal of 130457172 is 271754031.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130457177) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5435704 + ... + 5435727.

Almost surely, 2130457172 is an apocalyptic number.

130457172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

130457172 is an abundant number, since it is smaller than the sum of its proper divisors (173942924).

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

130457172 is a wasteful number, since it uses less digits than its factorization.

130457172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10871438 (or 10871436 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 30.

The square root of 130457172 is about 11421.7849743374. The cubic root of 130457172 is about 507.1728380685.

The spelling of 130457172 in words is "one hundred thirty million, four hundred fifty-seven thousand, one hundred seventy-two".

Divisors: 1 2 3 4 6 12 10871431 21742862 32614293 43485724 65228586 130457172