8720232 has 16 divisors (see below), whose sum is σ = 21800640. Its totient is φ = 2906736.

The previous prime is 8720227. The next prime is 8720233. The reversal of 8720232 is 2320278.

It is a super-2 number, since 2×8720232² = 152084892267648, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 363343 = 8720232 / (8 + 7 + 2 + 0 + 2 + 3 + 2).

It is not an unprimeable number, because it can be changed into a prime (8720233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 181648 + ... + 181695.

It is an arithmetic number, because the mean of its divisors is an integer number (1362540).

Almost surely, 2^8720232 is an apocalyptic number.

It is an amenable number.

8720232 is an abundant number, since it is smaller than the sum of its proper divisors (13080408).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8720232 is a wasteful number, since it uses less digits than its factorization.

8720232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363352 (or 363348 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 8720232 is about 2953.0038943422. The cubic root of 8720232 is about 205.8303186884.

Adding to 8720232 its product of nonzero digits (1344), we get a triangular number (8721576 = T₄₁₇₆).

The spelling of 8720232 in words is "eight million, seven hundred twenty thousand, two hundred thirty-two".