45446720 has 56 divisors (see below), whose sum is σ = 118067328. Its totient is φ = 16524800.

The previous prime is 45446719. The next prime is 45446749. The reversal of 45446720 is 2764454.

It is a Harshad number since it is a multiple of its sum of digits (32).

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, 2936 + ... + 9975.

Almost surely, 2^45446720 is an apocalyptic number.

45446720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45446720 is an abundant number, since it is smaller than the sum of its proper divisors (72620608).

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

45446720 is a wasteful number, since it uses less digits than its factorization.

45446720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12939 (or 12929 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 32.

The square root of 45446720 is about 6741.4182484103. The cubic root of 45446720 is about 356.8624462548.

It can be divided in two parts, 454 and 46720, that added together give a palindrome (47174).

The spelling of 45446720 in words is "forty-five million, four hundred forty-six thousand, seven hundred twenty".