216890892 has 48 divisors (see below), whose sum is σ = 577517920. Its totient is φ = 70341696.

The previous prime is 216890881. The next prime is 216890923. The reversal of 216890892 is 298098612.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23143 + ... + 31134.

Almost surely, 2^216890892 is an apocalyptic number.

It is an amenable number.

216890892 is an abundant number, since it is smaller than the sum of its proper divisors (360627028).

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

216890892 is a wasteful number, since it uses less digits than its factorization.

216890892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54327 (or 54319 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 216890892 is about 14727.2160301939. The cubic root of 216890892 is about 600.8237684915.

The spelling of 216890892 in words is "two hundred sixteen million, eight hundred ninety thousand, eight hundred ninety-two".