13894257 has 8 divisors (see below), whose sum is σ = 19950784. Its totient is φ = 8550288.

The previous prime is 13894247. The next prime is 13894261. The reversal of 13894257 is 75249831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13894257 - 2⁶ = 13894193 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 356263 = 13894257 / (1 + 3 + 8 + 9 + 4 + 2 + 5 + 7).

It is the 3728-th Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13894207) by changing a digit.

It is a nontrivial repunit in base 3727.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 178093 + ... + 178170.

It is an arithmetic number, because the mean of its divisors is an integer number (2493848).

Almost surely, 2^13894257 is an apocalyptic number.

It is an amenable number.

13894257 is a deficient number, since it is larger than the sum of its proper divisors (6056527).

13894257 is a wasteful number, since it uses less digits than its factorization.

13894257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356279.

The product of its digits is 60480, while the sum is 39.

The square root of 13894257 is about 3727.5001006036. The cubic root of 13894257 is about 240.4058930194.

It can be divided in two parts, 138 and 94257, that added together give a triangular number (94395 = T₄₃₄).

The spelling of 13894257 in words is "thirteen million, eight hundred ninety-four thousand, two hundred fifty-seven".