457249138 has 16 divisors (see below), whose sum is σ = 713097504. Its totient is φ = 219716640.

The previous prime is 457249129. The next prime is 457249139. The reversal of 457249138 is 831942754.

It is a junction number, because it is equal to n+sod(n) for n = 457249094 and 457249103.

It is not an unprimeable number, because it can be changed into a prime (457249139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36120 + ... + 47107.

It is an arithmetic number, because the mean of its divisors is an integer number (44568594).

Almost surely, 2^457249138 is an apocalyptic number.

457249138 is a deficient number, since it is larger than the sum of its proper divisors (255848366).

457249138 is a wasteful number, since it uses less digits than its factorization.

457249138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83337.

The product of its digits is 241920, while the sum is 43.

The square root of 457249138 is about 21383.3846245163. The cubic root of 457249138 is about 770.4024084279.

The spelling of 457249138 in words is "four hundred fifty-seven million, two hundred forty-nine thousand, one hundred thirty-eight".