428405204 has 6 divisors (see below), whose sum is σ = 749709114. Its totient is φ = 214202600.

The previous prime is 428405191. The next prime is 428405231. The reversal of 428405204 is 402504824.

It can be written as a sum of positive squares in only one way, i.e., 414041104 + 14364100 = 20348^2 + 3790^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53550647 + ... + 53550654.

It is an arithmetic number, because the mean of its divisors is an integer number (124951519).

Almost surely, 2^428405204 is an apocalyptic number.

It is an amenable number.

428405204 is a deficient number, since it is larger than the sum of its proper divisors (321303910).

428405204 is a wasteful number, since it uses less digits than its factorization.

428405204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107101305 (or 107101303 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 29.

The square root of 428405204 is about 20697.9516860969. The cubic root of 428405204 is about 753.8499538430.

The spelling of 428405204 in words is "four hundred twenty-eight million, four hundred five thousand, two hundred four".