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457505638 = 24343112343
BaseRepresentation
bin11011010001001…
…111101101100110
31011212212200202021
4123101033231212
51414110140023
6113221533354
714223506452
oct3321175546
91155780667
10457505638
11215282837
1210927425a
1373a270c5
1444a93662
152a27235d
hex1b44fb66

457505638 has 16 divisors (see below), whose sum is σ = 703904256. Its totient is φ = 222896520.

The previous prime is 457505621. The next prime is 457505639. The reversal of 457505638 is 836505754.

It is a super-2 number, since 2×4575056382 = 418622817603574088, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a junction number, because it is equal to n+sod(n) for n = 457505594 and 457505603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (457505639) 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 7 ways as a sum of consecutive naturals, for example, 30895 + ... + 43237.

It is an arithmetic number, because the mean of its divisors is an integer number (43994016).

Almost surely, 2457505638 is an apocalyptic number.

457505638 is a deficient number, since it is larger than the sum of its proper divisors (246398618).

457505638 is a wasteful number, since it uses less digits than its factorization.

457505638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12819.

The product of its (nonzero) digits is 504000, while the sum is 43.

The square root of 457505638 is about 21389.3814309811. The cubic root of 457505638 is about 770.5464373336.

The spelling of 457505638 in words is "four hundred fifty-seven million, five hundred five thousand, six hundred thirty-eight".

Divisors: 1 2 43 86 431 862 12343 18533 24686 37066 530749 1061498 5319833 10639666 228752819 457505638