216436502 has 4 divisors (see below), whose sum is σ = 324654756. Its totient is φ = 108218250.

The previous prime is 216436487. The next prime is 216436523. The reversal of 216436502 is 205634612.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54109124 + ... + 54109127.

It is an arithmetic number, because the mean of its divisors is an integer number (81163689).

Almost surely, 2^216436502 is an apocalyptic number.

216436502 is a deficient number, since it is larger than the sum of its proper divisors (108218254).

216436502 is a wasteful number, since it uses less digits than its factorization.

216436502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108218253.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 216436502 is about 14711.7810614487. The cubic root of 216436502 is about 600.4038965701.

The spelling of 216436502 in words is "two hundred sixteen million, four hundred thirty-six thousand, five hundred two".