216874550 has 48 divisors (see below), whose sum is σ = 427472640. Its totient is φ = 81632160.

The previous prime is 216874547. The next prime is 216874571. The reversal of 216874550 is 55478612.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 157967 + ... + 159333.

It is an arithmetic number, because the mean of its divisors is an integer number (8905680).

Almost surely, 2^216874550 is an apocalyptic number.

216874550 is a deficient number, since it is larger than the sum of its proper divisors (210598090).

216874550 is a wasteful number, since it uses less digits than its factorization.

216874550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1565 (or 1560 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 38.

The square root of 216874550 is about 14726.6611966189. The cubic root of 216874550 is about 600.8086780951.

The spelling of 216874550 in words is "two hundred sixteen million, eight hundred seventy-four thousand, five hundred fifty".