45397690 has 32 divisors (see below), whose sum is σ = 88678800. Its totient is φ = 16633344.

The previous prime is 45397687. The next prime is 45397711. The reversal of 45397690 is 9679354.

It can be written as a sum of positive squares in 8 ways, for example, as 24117921 + 21279769 = 4911^2 + 4613^2 .

It is a super-2 number, since 2×45397690² = 4121900514672200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16536 + ... + 19084.

Almost surely, 2^45397690 is an apocalyptic number.

45397690 is a deficient number, since it is larger than the sum of its proper divisors (43281110).

45397690 is a wasteful number, since it uses less digits than its factorization.

45397690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2706.

The product of its (nonzero) digits is 204120, while the sum is 43.

The square root of 45397690 is about 6737.7807919225. The cubic root of 45397690 is about 356.7340669006.

The spelling of 45397690 in words is "forty-five million, three hundred ninety-seven thousand, six hundred ninety".