10403904 has 56 divisors (see below), whose sum is σ = 31463488. Its totient is φ = 2972160.

The previous prime is 10403903. The next prime is 10403947. The reversal of 10403904 is 40930401.

It is a tau number, because it is divible by the number of its divisors (56).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (10403903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2527 + ... + 5214.

It is an arithmetic number, because the mean of its divisors is an integer number (561848).

Almost surely, 2^10403904 is an apocalyptic number.

10403904 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

10403904 is an abundant number, since it is smaller than the sum of its proper divisors (21059584).

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

10403904 is an equidigital number, since it uses as much as digits as its factorization.

10403904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7763 (or 7753 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 10403904 is about 3225.5083320308. The cubic root of 10403904 is about 218.3058860018.

The spelling of 10403904 in words is "ten million, four hundred three thousand, nine hundred four".