13618772 has 12 divisors (see below), whose sum is σ = 23863476. Its totient is φ = 6800640.

The previous prime is 13618771. The next prime is 13618789. The reversal of 13618772 is 27781631.

It can be written as a sum of positive squares in 2 ways, for example, as 3671056 + 9947716 = 1916^2 + 3154^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13618771) 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, 2372 + ... + 5732.

It is an arithmetic number, because the mean of its divisors is an integer number (1988623).

Almost surely, 2^13618772 is an apocalyptic number.

It is an amenable number.

13618772 is a deficient number, since it is larger than the sum of its proper divisors (10244704).

13618772 is a wasteful number, since it uses less digits than its factorization.

13618772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4378 (or 4376 counting only the distinct ones).

The product of its digits is 14112, while the sum is 35.

The square root of 13618772 is about 3690.3620418598. The cubic root of 13618772 is about 238.8064117497.

The spelling of 13618772 in words is "thirteen million, six hundred eighteen thousand, seven hundred seventy-two".