45280720 has 40 divisors (see below), whose sum is σ = 107734176. Its totient is φ = 17689728.

The previous prime is 45280717. The next prime is 45280751. The reversal of 45280720 is 2708254.

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 3142 + ... + 10021.

Almost surely, 2^45280720 is an apocalyptic number.

45280720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45280720 is an abundant number, since it is smaller than the sum of its proper divisors (62453456).

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

45280720 is a wasteful number, since it uses less digits than its factorization.

45280720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13219 (or 13213 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 45280720 is about 6729.0950357385. The cubic root of 45280720 is about 356.4274208079.

Adding to 45280720 its reverse (2708254), we get a palindrome (47988974).

The spelling of 45280720 in words is "forty-five million, two hundred eighty thousand, seven hundred twenty".