45488890 has 16 divisors (see below), whose sum is σ = 82114560. Its totient is φ = 18143440.

The previous prime is 45488867. The next prime is 45488909. The reversal of 45488890 is 9888454.

It is a super-2 number, since 2×45488890² = 4138478226864200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 45488890.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2746 + ... + 9925.

It is an arithmetic number, because the mean of its divisors is an integer number (5132160).

Almost surely, 2^45488890 is an apocalyptic number.

45488890 is a deficient number, since it is larger than the sum of its proper divisors (36625670).

45488890 is a wasteful number, since it uses less digits than its factorization.

45488890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13037.

The product of its (nonzero) digits is 368640, while the sum is 46.

The square root of 45488890 is about 6744.5452033477. The cubic root of 45488890 is about 356.9727896572.

Subtracting from 45488890 its product of nonzero digits (368640), we obtain a triangular number (45120250 = T₉₄₉₉).

The spelling of 45488890 in words is "forty-five million, four hundred eighty-eight thousand, eight hundred ninety".