40812928 has 32 divisors (see below), whose sum is σ = 87564960. Its totient is φ = 18835968.

The previous prime is 40812923. The next prime is 40812929. The reversal of 40812928 is 82921804.

It is a tau number, because it is divible by the number of its divisors (32).

It is a junction number, because it is equal to n+sod(n) for n = 40812893 and 40812902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40812923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10600 + ... + 13927.

It is an arithmetic number, because the mean of its divisors is an integer number (2736405).

Almost surely, 2^40812928 is an apocalyptic number.

It is an amenable number.

40812928 is an abundant number, since it is smaller than the sum of its proper divisors (46752032).

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

40812928 is a wasteful number, since it uses less digits than its factorization.

40812928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24554 (or 24542 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 40812928 is about 6388.4996673710. The cubic root of 40812928 is about 344.2964813748.

The spelling of 40812928 in words is "forty million, eight hundred twelve thousand, nine hundred twenty-eight".