428013904 has 10 divisors (see below), whose sum is σ = 829276970. Its totient is φ = 214006944.

The previous prime is 428013899. The next prime is 428013917. The reversal of 428013904 is 409310824.

It can be written as a sum of positive squares in only one way, i.e., 354945600 + 73068304 = 18840^2 + 8548^2 .

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, 13375419 + ... + 13375450.

It is an arithmetic number, because the mean of its divisors is an integer number (82927697).

Almost surely, 2^428013904 is an apocalyptic number.

It is an amenable number.

428013904 is a deficient number, since it is larger than the sum of its proper divisors (401263066).

428013904 is a wasteful number, since it uses less digits than its factorization.

428013904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26750877 (or 26750871 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 428013904 is about 20688.4969004517. The cubic root of 428013904 is about 753.6203648615.

The spelling of 428013904 in words is "four hundred twenty-eight million, thirteen thousand, nine hundred four".