45089820 has 36 divisors (see below), whose sum is σ = 136773000. Its totient is φ = 12023904.

The previous prime is 45089801. The next prime is 45089839. The reversal of 45089820 is 2898054.

It is an interprime number because it is at equal distance from previous prime (45089801) and next prime (45089839).

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 125070 + ... + 125429.

It is an arithmetic number, because the mean of its divisors is an integer number (3799250).

Almost surely, 2^45089820 is an apocalyptic number.

It is an amenable number.

45089820 is an abundant number, since it is smaller than the sum of its proper divisors (91683180).

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

45089820 is a wasteful number, since it uses less digits than its factorization.

45089820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250514 (or 250509 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 45089820 is about 6714.8953826549. The cubic root of 45089820 is about 355.9258251388.

The spelling of 45089820 in words is "forty-five million, eighty-nine thousand, eight hundred twenty".