39604428 has 18 divisors (see below), whose sum is σ = 100111284. Its totient is φ = 13201464.

The previous prime is 39604403. The next prime is 39604447. The reversal of 39604428 is 82440693.

It is a happy number.

39604428 is a `hidden beast` number, since 3 + 9 + 604 + 42 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1100123 = 39604428 / (3 + 9 + 6 + 0 + 4 + 4 + 2 + 8).

39604428 is a modest number, since divided by 4428 gives 396 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 39604392 and 39604401.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 550026 + ... + 550097.

It is an arithmetic number, because the mean of its divisors is an integer number (5561738).

Almost surely, 2^39604428 is an apocalyptic number.

It is an amenable number.

39604428 is an abundant number, since it is smaller than the sum of its proper divisors (60506856).

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

39604428 is a wasteful number, since it uses less digits than its factorization.

39604428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1100133 (or 1100128 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 39604428 is about 6293.2049068817. The cubic root of 39604428 is about 340.8640881589.

The spelling of 39604428 in words is "thirty-nine million, six hundred four thousand, four hundred twenty-eight".