10639398 has 32 divisors (see below), whose sum is σ = 26530560. Its totient is φ = 2763360.

The previous prime is 10639397. The next prime is 10639429. The reversal of 10639398 is 89393601.

It is a super-2 number, since 2×10639398² = 226393579604808, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10639397) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11053 + ... + 11976.

It is an arithmetic number, because the mean of its divisors is an integer number (829080).

Almost surely, 2^10639398 is an apocalyptic number.

10639398 is an abundant number, since it is smaller than the sum of its proper divisors (15891162).

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

10639398 is a wasteful number, since it uses less digits than its factorization.

10639398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23052.

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 10639398 is about 3261.8090072841. The cubic root of 10639398 is about 219.9407416156.

It can be divided in two parts, 106393 and 98, that added together give a triangular number (106491 = T₄₆₁).

The spelling of 10639398 in words is "ten million, six hundred thirty-nine thousand, three hundred ninety-eight".