45445620 has 96 divisors (see below), whose sum is σ = 142644096. Its totient is φ = 10713600.

The previous prime is 45445601. The next prime is 45445643. The reversal of 45445620 is 2654454.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23490 + ... + 25350.

It is an arithmetic number, because the mean of its divisors is an integer number (1485876).

Almost surely, 2^45445620 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45445620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71322048).

45445620 is an abundant number, since it is smaller than the sum of its proper divisors (97198476).

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

45445620 is a wasteful number, since it uses less digits than its factorization.

45445620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1921 (or 1919 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

The square root of 45445620 is about 6741.3366627101. The cubic root of 45445620 is about 356.8595670455.

The spelling of 45445620 in words is "forty-five million, four hundred forty-five thousand, six hundred twenty".