216203650 has 48 divisors (see below), whose sum is σ = 434597184. Its totient is φ = 79548480.

The previous prime is 216203633. The next prime is 216203651. The reversal of 216203650 is 56302612.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (216203651) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 316209 + ... + 316891.

It is an arithmetic number, because the mean of its divisors is an integer number (9054108).

Almost surely, 2^216203650 is an apocalyptic number.

216203650 is an abundant number, since it is smaller than the sum of its proper divisors (218393534).

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

216203650 is a wasteful number, since it uses less digits than its factorization.

216203650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1195 (or 1190 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 216203650 is about 14703.8651381193. The cubic root of 216203650 is about 600.1885055847.

The spelling of 216203650 in words is "two hundred sixteen million, two hundred three thousand, six hundred fifty".