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542912508 = 223215080903
BaseRepresentation
bin100000010111000…
…010111111111100
31101211120210221200
4200113002333330
52102441200013
6125512255500
716311452205
oct4027027774
91354523850
10542912508
11259507226
121319a1590
138862b508
14521665ac
15329e2e73
hex205c2ffc

542912508 has 18 divisors (see below), whose sum is σ = 1372362264. Its totient is φ = 180970824.

The previous prime is 542912501. The next prime is 542912533. The reversal of 542912508 is 805219245.

542912508 is a `hidden beast` number, since 542 + 91 + 25 + 0 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 15080903 = 542912508 / (5 + 4 + 2 + 9 + 1 + 2 + 5 + 0 + 8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542912501) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7540416 + ... + 7540487.

It is an arithmetic number, because the mean of its divisors is an integer number (76242348).

Almost surely, 2542912508 is an apocalyptic number.

It is an amenable number.

542912508 is an abundant number, since it is smaller than the sum of its proper divisors (829449756).

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

542912508 is a wasteful number, since it uses less digits than its factorization.

542912508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15080913 (or 15080908 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 542912508 is about 23300.4829992857. The cubic root of 542912508 is about 815.7866909281.

The spelling of 542912508 in words is "five hundred forty-two million, nine hundred twelve thousand, five hundred eight".

Divisors: 1 2 3 4 6 9 12 18 36 15080903 30161806 45242709 60323612 90485418 135728127 180970836 271456254 542912508