404339028 has 24 divisors (see below), whose sum is σ = 943794432. Its totient is φ = 134731584.

The previous prime is 404339021. The next prime is 404339041. The reversal of 404339028 is 820933404.

It is a self number, because there is not a number n which added to its sum of digits gives 404339028.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404339021) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 49576 + ... + 57152.

It is an arithmetic number, because the mean of its divisors is an integer number (39324768).

Almost surely, 2^404339028 is an apocalyptic number.

It is an amenable number.

404339028 is an abundant number, since it is smaller than the sum of its proper divisors (539455404).

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

404339028 is a wasteful number, since it uses less digits than its factorization.

404339028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12031 (or 12029 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 404339028 is about 20108.1831103658. The cubic root of 404339028 is about 739.4609100223.

It can be divided in two parts, 4043 and 39028, that added together give a triangular number (43071 = T₂₉₃).

The spelling of 404339028 in words is "four hundred four million, three hundred thirty-nine thousand, twenty-eight".