13872526 has 4 divisors (see below), whose sum is σ = 20808792. Its totient is φ = 6936262.

The previous prime is 13872517. The next prime is 13872533. The reversal of 13872526 is 62527831.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 62527831 = 227 ⋅275453.

It is a junction number, because it is equal to n+sod(n) for n = 13872491 and 13872500.

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, 3468130 + ... + 3468133.

It is an arithmetic number, because the mean of its divisors is an integer number (5202198).

Almost surely, 2^13872526 is an apocalyptic number.

13872526 is a deficient number, since it is larger than the sum of its proper divisors (6936266).

13872526 is an equidigital number, since it uses as much as digits as its factorization.

13872526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6936265.

The product of its digits is 20160, while the sum is 34.

The square root of 13872526 is about 3724.5840036170. The cubic root of 13872526 is about 240.2804938116.

The spelling of 13872526 in words is "thirteen million, eight hundred seventy-two thousand, five hundred twenty-six".