13901247 has 16 divisors (see below), whose sum is σ = 20724480. Its totient is φ = 9209016.

The previous prime is 13901231. The next prime is 13901249. The reversal of 13901247 is 74210931.

It is not a de Polignac number, because 13901247 - 2⁴ = 13901231 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 13901247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13901249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2968 + ... + 6050.

It is an arithmetic number, because the mean of its divisors is an integer number (1295280).

Almost surely, 2^13901247 is an apocalyptic number.

13901247 is a deficient number, since it is larger than the sum of its proper divisors (6823233).

13901247 is a wasteful number, since it uses less digits than its factorization.

13901247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3259 (or 3253 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 13901247 is about 3728.4376084360. The cubic root of 13901247 is about 240.4462011714.

The spelling of 13901247 in words is "thirteen million, nine hundred one thousand, two hundred forty-seven".