13672784 has 20 divisors (see below), whose sum is σ = 26927220. Its totient is φ = 6723840.

The previous prime is 13672783. The next prime is 13672793. The reversal of 13672784 is 48727631.

It can be written as a sum of positive squares in 2 ways, for example, as 4840000 + 8832784 = 2200^2 + 2972^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13672783) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6029 + ... + 7980.

It is an arithmetic number, because the mean of its divisors is an integer number (1346361).

Almost surely, 2^13672784 is an apocalyptic number.

It is an amenable number.

13672784 is a deficient number, since it is larger than the sum of its proper divisors (13254436).

13672784 is a wasteful number, since it uses less digits than its factorization.

13672784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14078 (or 14072 counting only the distinct ones).

The product of its digits is 56448, while the sum is 38.

The square root of 13672784 is about 3697.6727816290. The cubic root of 13672784 is about 239.1216970950.

The spelling of 13672784 in words is "thirteen million, six hundred seventy-two thousand, seven hundred eighty-four".