10639904 has 48 divisors (see below), whose sum is σ = 23115456. Its totient is φ = 4780800.

The previous prime is 10639903. The next prime is 10639921. The reversal of 10639904 is 40993601.

It is a super-2 number, since 2×10639904² = 226415114258432, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10639903) 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, 58694 + ... + 58874.

It is an arithmetic number, because the mean of its divisors is an integer number (481572).

Almost surely, 2^10639904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10639904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11557728).

10639904 is an abundant number, since it is smaller than the sum of its proper divisors (12475552).

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

10639904 is a wasteful number, since it uses less digits than its factorization.

10639904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369 (or 361 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 10639904 is about 3261.8865706827. The cubic root of 10639904 is about 219.9442282869.

The spelling of 10639904 in words is "ten million, six hundred thirty-nine thousand, nine hundred four".