13621488 has 40 divisors (see below), whose sum is σ = 37261008. Its totient is φ = 4273152.

The previous prime is 13621481. The next prime is 13621523. The reversal of 13621488 is 88412631.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13621481) 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, 7531 + ... + 9162.

Almost surely, 2^13621488 is an apocalyptic number.

It is an amenable number.

13621488 is an abundant number, since it is smaller than the sum of its proper divisors (23639520).

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

13621488 is a wasteful number, since it uses less digits than its factorization.

13621488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16721 (or 16715 counting only the distinct ones).

The product of its digits is 9216, while the sum is 33.

The square root of 13621488 is about 3690.7300090903. The cubic root of 13621488 is about 238.8222857973.

It can be divided in two parts, 1362 and 1488, that added together give a triangular number (2850 = T₇₅).

The spelling of 13621488 in words is "thirteen million, six hundred twenty-one thousand, four hundred eighty-eight".