13572738 has 16 divisors (see below), whose sum is σ = 30161760. Its totient is φ = 4524228.

The previous prime is 13572733. The next prime is 13572739. The reversal of 13572738 is 83727531.

13572738 is a `hidden beast` number, since 13 + 572 + 73 + 8 = 666.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13572731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125620 + ... + 125727.

It is an arithmetic number, because the mean of its divisors is an integer number (1885110).

Almost surely, 2^13572738 is an apocalyptic number.

13572738 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

13572738 is an abundant number, since it is smaller than the sum of its proper divisors (16589022).

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

13572738 is a wasteful number, since it uses less digits than its factorization.

13572738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251358 (or 251352 counting only the distinct ones).

The product of its digits is 35280, while the sum is 36.

The square root of 13572738 is about 3684.1197048956. The cubic root of 13572738 is about 238.5370378775.

It can be divided in two parts, 1357 and 2738, that added together give a triangular number (4095 = T₉₀).

The spelling of 13572738 in words is "thirteen million, five hundred seventy-two thousand, seven hundred thirty-eight".