216387154 has 16 divisors (see below), whose sum is σ = 342921600. Its totient is φ = 102238864.

The previous prime is 216387133. The next prime is 216387179. The reversal of 216387154 is 451783612.

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, 36964 + ... + 42415.

It is an arithmetic number, because the mean of its divisors is an integer number (21432600).

Almost surely, 2^216387154 is an apocalyptic number.

216387154 is a deficient number, since it is larger than the sum of its proper divisors (126534446).

216387154 is a wasteful number, since it uses less digits than its factorization.

216387154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79457.

The product of its digits is 40320, while the sum is 37.

The square root of 216387154 is about 14710.1038065678. The cubic root of 216387154 is about 600.3582619640.

The spelling of 216387154 in words is "two hundred sixteen million, three hundred eighty-seven thousand, one hundred fifty-four".