216652400 has 30 divisors (see below), whose sum is σ = 520508352. Its totient is φ = 86660800.

The previous prime is 216652399. The next prime is 216652439. The reversal of 216652400 is 4256612.

It is a self number, because there is not a number n which added to its sum of digits gives 216652400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 270416 + ... + 271215.

Almost surely, 2^216652400 is an apocalyptic number.

216652400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

216652400 is an abundant number, since it is smaller than the sum of its proper divisors (303855952).

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

216652400 is a wasteful number, since it uses less digits than its factorization.

216652400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541649 (or 541638 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 216652400 is about 14719.1168213314. The cubic root of 216652400 is about 600.6034669167.

The spelling of 216652400 in words is "two hundred sixteen million, six hundred fifty-two thousand, four hundred".