45622720 has 112 divisors (see below), whose sum is σ = 127759968. Its totient is φ = 15298560.

The previous prime is 45622673. The next prime is 45622721. The reversal of 45622720 is 2722654.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45622721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45262 + ... + 46258.

It is an arithmetic number, because the mean of its divisors is an integer number (1140714).

Almost surely, 2^45622720 is an apocalyptic number.

45622720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45622720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63879984).

45622720 is an abundant number, since it is smaller than the sum of its proper divisors (82137248).

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

45622720 is a wasteful number, since it uses less digits than its factorization.

45622720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1038 (or 1028 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 45622720 is about 6754.4592677727. The cubic root of 45622720 is about 357.3225226303.

The spelling of 45622720 in words is "forty-five million, six hundred twenty-two thousand, seven hundred twenty".