13779238 has 24 divisors (see below), whose sum is σ = 22991976. Its totient is φ = 6188160.

The previous prime is 13779223. The next prime is 13779251. The reversal of 13779238 is 83297731.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 13779238.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23181 + ... + 23767.

It is an arithmetic number, because the mean of its divisors is an integer number (957999).

Almost surely, 2^13779238 is an apocalyptic number.

13779238 is the 2348-th heptagonal number.

13779238 is a deficient number, since it is larger than the sum of its proper divisors (9212738).

13779238 is a wasteful number, since it uses less digits than its factorization.

13779238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708 (or 697 counting only the distinct ones).

The product of its digits is 63504, while the sum is 40.

The square root of 13779238 is about 3712.0396010819. The cubic root of 13779238 is about 239.7406805550.

The spelling of 13779238 in words is "thirteen million, seven hundred seventy-nine thousand, two hundred thirty-eight".