8872731 has 12 divisors (see below), whose sum is σ = 14647152. Its totient is φ = 5070096.

The previous prime is 8872723. The next prime is 8872739. The reversal of 8872731 is 1372788.

8872731 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (8872723) and next prime (8872739).

It is not a de Polignac number, because 8872731 - 2³ = 8872723 is a prime.

It is a super-2 number, since 2×8872731² = 157450710796722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

8872731 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8872739) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 70356 + ... + 70481.

It is an arithmetic number, because the mean of its divisors is an integer number (1220596).

Almost surely, 2^8872731 is an apocalyptic number.

8872731 is a deficient number, since it is larger than the sum of its proper divisors (5774421).

8872731 is a wasteful number, since it uses less digits than its factorization.

8872731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140850 (or 140847 counting only the distinct ones).

The product of its digits is 18816, while the sum is 36.

The square root of 8872731 is about 2978.7129771094. The cubic root of 8872731 is about 207.0232418068.

The spelling of 8872731 in words is "eight million, eight hundred seventy-two thousand, seven hundred thirty-one".