457138738 has 32 divisors (see below), whose sum is σ = 846720000. Its totient is φ = 184387392.

The previous prime is 457138733. The next prime is 457138739. The reversal of 457138738 is 837831754.

It is not an unprimeable number, because it can be changed into a prime (457138733) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7938 + ... + 31261.

It is an arithmetic number, because the mean of its divisors is an integer number (26460000).

Almost surely, 2^457138738 is an apocalyptic number.

457138738 is a deficient number, since it is larger than the sum of its proper divisors (389581262).

457138738 is a wasteful number, since it uses less digits than its factorization.

457138738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39239 (or 39225 counting only the distinct ones).

The product of its digits is 564480, while the sum is 46.

The square root of 457138738 is about 21380.8030251438. The cubic root of 457138738 is about 770.3404004583.

The spelling of 457138738 in words is "four hundred fifty-seven million, one hundred thirty-eight thousand, seven hundred thirty-eight".