40220828 has 6 divisors (see below), whose sum is σ = 70386456. Its totient is φ = 20110412.

The previous prime is 40220797. The next prime is 40220839. The reversal of 40220828 is 82802204.

40220828 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 40220797 and 40220806.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 5027600 + ... + 5027607.

It is an arithmetic number, because the mean of its divisors is an integer number (11731076).

Almost surely, 2^40220828 is an apocalyptic number.

It is an amenable number.

40220828 is a deficient number, since it is larger than the sum of its proper divisors (30165628).

40220828 is a wasteful number, since it uses less digits than its factorization.

40220828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10055211 (or 10055209 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 26.

The square root of 40220828 is about 6341.9892778213. The cubic root of 40220828 is about 342.6233856691.

The spelling of 40220828 in words is "forty million, two hundred twenty thousand, eight hundred twenty-eight".