45440688 has 20 divisors (see below), whose sum is σ = 117388568. Its totient is φ = 15146880.

The previous prime is 45440687. The next prime is 45440693. The reversal of 45440688 is 88604454.

It is a super-2 number, since 2×45440688² = 4129712251826688, which contains 22 as substring.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (45440687) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 473293 + ... + 473388.

Almost surely, 2^45440688 is an apocalyptic number.

45440688 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

45440688 is an abundant number, since it is smaller than the sum of its proper divisors (71947880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45440688 is a wasteful number, since it uses less digits than its factorization.

45440688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 946692 (or 946686 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 39.

The square root of 45440688 is about 6740.9708499592. The cubic root of 45440688 is about 356.8466571467.

The spelling of 45440688 in words is "forty-five million, four hundred forty thousand, six hundred eighty-eight".