45491028 has 24 divisors (see below), whose sum is σ = 115795680. Its totient is φ = 13785120.

The previous prime is 45491023. The next prime is 45491051. The reversal of 45491028 is 82019454.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a self number, because there is not a number n which added to its sum of digits gives 45491028.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45491023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172183 + ... + 172446.

It is an arithmetic number, because the mean of its divisors is an integer number (4824820).

Almost surely, 2^45491028 is an apocalyptic number.

It is an amenable number.

45491028 is an abundant number, since it is smaller than the sum of its proper divisors (70304652).

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

45491028 is a wasteful number, since it uses less digits than its factorization.

45491028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344647 (or 344645 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 45491028 is about 6744.7036999412. The cubic root of 45491028 is about 356.9783822012.

The spelling of 45491028 in words is "forty-five million, four hundred ninety-one thousand, twenty-eight".