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457139560 = 23511428489
BaseRepresentation
bin11011001111110…
…110010101101000
31011212012002120211
4123033312111220
51414011431220
6113210030504
714220423253
oct3317662550
91155162524
10457139560
11215052799
12109118434
13739295a7
14449da09a
152a1edb5a
hex1b3f6568

457139560 has 16 divisors (see below), whose sum is σ = 1028564100. Its totient is φ = 182855808.

The previous prime is 457139539. The next prime is 457139561. The reversal of 457139560 is 65931754.

It can be written as a sum of positive squares in 2 ways, for example, as 380016036 + 77123524 = 19494^2 + 8782^2 .

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 11428489 = 457139560 / (4 + 5 + 7 + 1 + 3 + 9 + 5 + 6 + 0).

It is not an unprimeable number, because it can be changed into a prime (457139561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5714205 + ... + 5714284.

Almost surely, 2457139560 is an apocalyptic number.

457139560 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

457139560 is an abundant number, since it is smaller than the sum of its proper divisors (571424540).

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

457139560 is a wasteful number, since it uses less digits than its factorization.

457139560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11428500 (or 11428496 counting only the distinct ones).

The product of its (nonzero) digits is 113400, while the sum is 40.

The square root of 457139560 is about 21380.8222479866. The cubic root of 457139560 is about 770.3408621849.

The spelling of 457139560 in words is "four hundred fifty-seven million, one hundred thirty-nine thousand, five hundred sixty".

Divisors: 1 2 4 5 8 10 20 40 11428489 22856978 45713956 57142445 91427912 114284890 228569780 457139560