216852774 has 16 divisors (see below), whose sum is σ = 435274608. Its totient is φ = 72022752.

The previous prime is 216852767. The next prime is 216852787. The reversal of 216852774 is 477258612.

It is a congruent number.

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, 63577 + ... + 66900.

It is an arithmetic number, because the mean of its divisors is an integer number (27204663).

Almost surely, 2^216852774 is an apocalyptic number.

216852774 is an abundant number, since it is smaller than the sum of its proper divisors (218421834).

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

216852774 is a wasteful number, since it uses less digits than its factorization.

216852774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130759.

The product of its digits is 188160, while the sum is 42.

The square root of 216852774 is about 14725.9218387169. The cubic root of 216852774 is about 600.7885687005.

It can be divided in two parts, 216 and 852774, that multiplied together give a square (184199184 = 13572²).

The spelling of 216852774 in words is "two hundred sixteen million, eight hundred fifty-two thousand, seven hundred seventy-four".