457991830 has 16 divisors (see below), whose sum is σ = 850978944. Its totient is φ = 177287040.

The previous prime is 457991777. The next prime is 457991837. The reversal of 457991830 is 38199754.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (457991837) 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, 738387 + ... + 739006.

It is an arithmetic number, because the mean of its divisors is an integer number (53186184).

Almost surely, 2^457991830 is an apocalyptic number.

457991830 is a deficient number, since it is larger than the sum of its proper divisors (392987114).

457991830 is a wasteful number, since it uses less digits than its factorization.

457991830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1477431.

The product of its (nonzero) digits is 272160, while the sum is 46.

The square root of 457991830 is about 21400.7436786669. The cubic root of 457991830 is about 770.8192943600.

The spelling of 457991830 in words is "four hundred fifty-seven million, nine hundred ninety-one thousand, eight hundred thirty".