216702804 has 12 divisors (see below), whose sum is σ = 505639904. Its totient is φ = 72234264.

The previous prime is 216702781. The next prime is 216702823. The reversal of 216702804 is 408207612.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×216702804² = 93920210522924832, which contains 22 as substring.

It is a congruent number.

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, 9029272 + ... + 9029295.

Almost surely, 2^216702804 is an apocalyptic number.

It is an amenable number.

216702804 is an abundant number, since it is smaller than the sum of its proper divisors (288937100).

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

216702804 is a wasteful number, since it uses less digits than its factorization.

216702804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18058574 (or 18058572 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 216702804 is about 14720.8289168783. The cubic root of 216702804 is about 600.6500399369.

The spelling of 216702804 in words is "two hundred sixteen million, seven hundred two thousand, eight hundred four".