13638752 has 12 divisors (see below), whose sum is σ = 26851356. Its totient is φ = 6819360.

The previous prime is 13638749. The next prime is 13638763. The reversal of 13638752 is 25783631.

It is a super-2 number, since 2×13638752² = 372031112235008, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213074 + ... + 213137.

It is an arithmetic number, because the mean of its divisors is an integer number (2237613).

Almost surely, 2^13638752 is an apocalyptic number.

It is an amenable number.

13638752 is a deficient number, since it is larger than the sum of its proper divisors (13212604).

13638752 is an equidigital number, since it uses as much as digits as its factorization.

13638752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426221 (or 426213 counting only the distinct ones).

The product of its digits is 30240, while the sum is 35.

The square root of 13638752 is about 3693.0681011863. The cubic root of 13638752 is about 238.9231383941.

The spelling of 13638752 in words is "thirteen million, six hundred thirty-eight thousand, seven hundred fifty-two".