45409680 has 80 divisors (see below), whose sum is σ = 156418560. Its totient is φ = 12108672.

The previous prime is 45409667. The next prime is 45409691. The reversal of 45409680 is 8690454.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 8352 + ... + 12671.

It is an arithmetic number, because the mean of its divisors is an integer number (1955232).

Almost surely, 2^45409680 is an apocalyptic number.

45409680 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45409680 is an abundant number, since it is smaller than the sum of its proper divisors (111008880).

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

45409680 is a wasteful number, since it uses less digits than its factorization.

45409680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21045 (or 21033 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 45409680 is about 6738.6704920184. The cubic root of 45409680 is about 356.7654698564.

The spelling of 45409680 in words is "forty-five million, four hundred nine thousand, six hundred eighty".