10400004 has 36 divisors (see below), whose sum is σ = 27139840. Its totient is φ = 3354480.

The previous prime is 10399993. The next prime is 10400021. The reversal of 10400004 is 40000401.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3544 + ... + 5775.

Almost surely, 2^10400004 is an apocalyptic number.

It is an amenable number.

10400004 is an abundant number, since it is smaller than the sum of its proper divisors (16739836).

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

10400004 is a wasteful number, since it uses less digits than its factorization.

10400004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9360 (or 9355 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 10400004 is about 3224.9037194930. The cubic root of 10400004 is about 218.2786045967.

Adding to 10400004 its reverse (40000401), we get a palindrome (50400405).

The spelling of 10400004 in words is "ten million, four hundred thousand, four".