13237887 has 8 divisors (see below), whose sum is σ = 19008304. Its totient is φ = 8146368.

The previous prime is 13237859. The next prime is 13237901. The reversal of 13237887 is 78873231.

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

It is not a de Polignac number, because 13237887 - 2¹⁴ = 13221503 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: 339433 = 13237887 / (1 + 3 + 2 + 3 + 7 + 8 + 8 + 7).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13237817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169678 + ... + 169755.

It is an arithmetic number, because the mean of its divisors is an integer number (2376038).

Almost surely, 2^13237887 is an apocalyptic number.

13237887 is a deficient number, since it is larger than the sum of its proper divisors (5770417).

13237887 is a wasteful number, since it uses less digits than its factorization.

13237887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339449.

The product of its digits is 56448, while the sum is 39.

The square root of 13237887 is about 3638.3907156874. The cubic root of 13237887 is about 236.5590440598.

The spelling of 13237887 in words is "thirteen million, two hundred thirty-seven thousand, eight hundred eighty-seven".