87246731 has 16 divisors (see below), whose sum is σ = 103810560. Its totient is φ = 72277920.

The previous prime is 87246721. The next prime is 87246749. The reversal of 87246731 is 13764278.

It is not a de Polignac number, because 87246731 - 2⁶ = 87246667 is a prime.

It is a super-2 number, since 2×87246731² = 15223984140372722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87246721) 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, 7436 + ... + 15158.

It is an arithmetic number, because the mean of its divisors is an integer number (6488160).

Almost surely, 2^87246731 is an apocalyptic number.

87246731 is a deficient number, since it is larger than the sum of its proper divisors (16563829).

87246731 is a wasteful number, since it uses less digits than its factorization.

87246731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7826.

The product of its digits is 56448, while the sum is 38.

The square root of 87246731 is about 9340.5958589375. The cubic root of 87246731 is about 443.5232468166.

The spelling of 87246731 in words is "eighty-seven million, two hundred forty-six thousand, seven hundred thirty-one".