13561804 has 12 divisors (see below), whose sum is σ = 23964304. Its totient is φ = 6714864.

The previous prime is 13561783. The next prime is 13561829. The reversal of 13561804 is 40816531.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16047 + ... + 16870.

Almost surely, 2^13561804 is an apocalyptic number.

It is an amenable number.

13561804 is a deficient number, since it is larger than the sum of its proper divisors (10402500).

13561804 is a wasteful number, since it uses less digits than its factorization.

13561804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33024 (or 33022 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 13561804 is about 3682.6354693344. The cubic root of 13561804 is about 238.4729666819.

It can be divided in two parts, 13561 and 804, that added together give a triangular number (14365 = T₁₆₉).

The spelling of 13561804 in words is "thirteen million, five hundred sixty-one thousand, eight hundred four".