84223756 has 12 divisors (see below), whose sum is σ = 150819592. Its totient is φ = 41132448.

The previous prime is 84223747. The next prime is 84223781. The reversal of 84223756 is 65732248.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 244665 + ... + 245008.

Almost surely, 2^84223756 is an apocalyptic number.

84223756 is a gapful number since it is divisible by the number (86) formed by its first and last digit.

84223756 is the 4906-th centered heptagonal number.

It is an amenable number.

84223756 is a deficient number, since it is larger than the sum of its proper divisors (66595836).

84223756 is a wasteful number, since it uses less digits than its factorization.

84223756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489720 (or 489718 counting only the distinct ones).

The product of its digits is 80640, while the sum is 37.

The square root of 84223756 is about 9177.3501622200. The cubic root of 84223756 is about 438.3404357578.

The spelling of 84223756 in words is "eighty-four million, two hundred twenty-three thousand, seven hundred fifty-six".