216506092 has 24 divisors (see below), whose sum is σ = 424504080. Its totient is φ = 95751360.

The previous prime is 216506063. The next prime is 216506093. The reversal of 216506092 is 290605612.

It is a super-2 number, since 2×216506092² = 93749775746224928, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (216506093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64867 + ... + 68122.

It is an arithmetic number, because the mean of its divisors is an integer number (17687670).

Almost surely, 2^216506092 is an apocalyptic number.

216506092 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

216506092 is a deficient number, since it is larger than the sum of its proper divisors (207997988).

216506092 is a wasteful number, since it uses less digits than its factorization.

216506092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133041 (or 133039 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 216506092 is about 14714.1459826930. The cubic root of 216506092 is about 600.4682381970.

The spelling of 216506092 in words is "two hundred sixteen million, five hundred six thousand, ninety-two".