40445028 has 48 divisors (see below), whose sum is σ = 112927360. Its totient is φ = 12444192.

The previous prime is 40445021. The next prime is 40445029. The reversal of 40445028 is 82054404.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 40444992 and 40445010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40445021) 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, 13000 + ... + 15807.

Almost surely, 2^40445028 is an apocalyptic number.

It is an amenable number.

40445028 is an abundant number, since it is smaller than the sum of its proper divisors (72482332).

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

40445028 is a wasteful number, since it uses less digits than its factorization.

40445028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28833 (or 28825 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

The square root of 40445028 is about 6359.6405558805. The cubic root of 40445028 is about 343.2588265341.

The spelling of 40445028 in words is "forty million, four hundred forty-five thousand, twenty-eight".