216129802 has 16 divisors (see below), whose sum is σ = 380522880. Its totient is φ = 90123408.

The previous prime is 216129787. The next prime is 216129833. The reversal of 216129802 is 208921612.

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, 208102 + ... + 209137.

It is an arithmetic number, because the mean of its divisors is an integer number (23782680).

Almost surely, 2^216129802 is an apocalyptic number.

216129802 is a deficient number, since it is larger than the sum of its proper divisors (164393078).

216129802 is a wasteful number, since it uses less digits than its factorization.

216129802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417285.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 216129802 is about 14701.3537471894. The cubic root of 216129802 is about 600.1201629702.

The spelling of 216129802 in words is "two hundred sixteen million, one hundred twenty-nine thousand, eight hundred two".