45609880 has 32 divisors (see below), whose sum is σ = 108025200. Its totient is φ = 17283456.

The previous prime is 45609859. The next prime is 45609887. The reversal of 45609880 is 8890654.

It is a super-2 number, since 2×45609880² = 4160522307228800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45609887) 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, 29247 + ... + 30766.

Almost surely, 2^45609880 is an apocalyptic number.

45609880 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45609880 is an abundant number, since it is smaller than the sum of its proper divisors (62415320).

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

45609880 is a wasteful number, since it uses less digits than its factorization.

45609880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60043 (or 60039 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 45609880 is about 6753.5087176963. The cubic root of 45609880 is about 357.2889980204.

The spelling of 45609880 in words is "forty-five million, six hundred nine thousand, eight hundred eighty".