216735500 has 24 divisors (see below), whose sum is σ = 473351424. Its totient is φ = 86694000.

The previous prime is 216735461. The next prime is 216735551. The reversal of 216735500 is 5537612.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

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, 216236 + ... + 217235.

It is an arithmetic number, because the mean of its divisors is an integer number (19722976).

Almost surely, 2^216735500 is an apocalyptic number.

216735500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

216735500 is an abundant number, since it is smaller than the sum of its proper divisors (256615924).

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

216735500 is a wasteful number, since it uses less digits than its factorization.

216735500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433490 (or 433478 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 29.

The square root of 216735500 is about 14721.9394102815. The cubic root of 216735500 is about 600.6802470004.

The spelling of 216735500 in words is "two hundred sixteen million, seven hundred thirty-five thousand, five hundred".