13556402 has 4 divisors (see below), whose sum is σ = 20334606. Its totient is φ = 6778200.

The previous prime is 13556401. The next prime is 13556419. The reversal of 13556402 is 20465531.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 8579041 + 4977361 = 2929^2 + 2231^2 .

It is not an unprimeable number, because it can be changed into a prime (13556401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3389099 + ... + 3389102.

Almost surely, 2^13556402 is an apocalyptic number.

13556402 is a deficient number, since it is larger than the sum of its proper divisors (6778204).

13556402 is an equidigital number, since it uses as much as digits as its factorization.

13556402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6778203.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 13556402 is about 3681.9019541536. The cubic root of 13556402 is about 238.4412992615.

The spelling of 13556402 in words is "thirteen million, five hundred fifty-six thousand, four hundred two".