10639240 has 32 divisors (see below), whose sum is σ = 25200000. Its totient is φ = 4031424.

The previous prime is 10639217. The next prime is 10639241. The reversal of 10639240 is 4293601.

It is a super-2 number, since 2×10639240² = 226386855555200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10639241) 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, 6240 + ... + 7759.

It is an arithmetic number, because the mean of its divisors is an integer number (787500).

Almost surely, 2^10639240 is an apocalyptic number.

10639240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10639240 is an abundant number, since it is smaller than the sum of its proper divisors (14560760).

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

10639240 is a wasteful number, since it uses less digits than its factorization.

10639240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14029 (or 14025 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 10639240 is about 3261.7847875051. The cubic root of 10639240 is about 219.9396528695.

The spelling of 10639240 in words is "ten million, six hundred thirty-nine thousand, two hundred forty".