40029928 has 16 divisors (see below), whose sum is σ = 77477760. Its totient is φ = 19369200.

The previous prime is 40029901. The next prime is 40029961. The reversal of 40029928 is 82992004.

40029928 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a plaindrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 40029893 and 40029902.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80458 + ... + 80953.

It is an arithmetic number, because the mean of its divisors is an integer number (4842360).

Almost surely, 2^40029928 is an apocalyptic number.

It is an amenable number.

40029928 is a deficient number, since it is larger than the sum of its proper divisors (37447832).

40029928 is a wasteful number, since it uses less digits than its factorization.

40029928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161448 (or 161444 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 40029928 is about 6326.9208940843. The cubic root of 40029928 is about 342.0804616722.

The spelling of 40029928 in words is "forty million, twenty-nine thousand, nine hundred twenty-eight".