866226252 has 24 divisors (see below), whose sum is σ = 2025769536. Its totient is φ = 288088528.

The previous prime is 866226241. The next prime is 866226269. The reversal of 866226252 is 252622668.

It is a self number, because there is not a number n which added to its sum of digits gives 866226252.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76158 + ... + 86789.

It is an arithmetic number, because the mean of its divisors is an integer number (84407064).

Almost surely, 2^866226252 is an apocalyptic number.

It is an amenable number.

866226252 is an abundant number, since it is smaller than the sum of its proper divisors (1159543284).

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

866226252 is a wasteful number, since it uses less digits than its factorization.

866226252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163397 (or 163395 counting only the distinct ones).

The product of its digits is 138240, while the sum is 39.

The square root of 866226252 is about 29431.7218660411. The cubic root of 866226252 is about 953.2579746563.

The spelling of 866226252 in words is "eight hundred sixty-six million, two hundred twenty-six thousand, two hundred fifty-two".