216425632 has 24 divisors (see below), whose sum is σ = 439834752. Its totient is φ = 104721600.

The previous prime is 216425591. The next prime is 216425669. The reversal of 216425632 is 236524612.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a junction number, because it is equal to n+sod(n) for n = 216425594 and 216425603.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108094 + ... + 110077.

It is an arithmetic number, because the mean of its divisors is an integer number (18326448).

Almost surely, 2^216425632 is an apocalyptic number.

It is an amenable number.

216425632 is an abundant number, since it is smaller than the sum of its proper divisors (223409120).

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

216425632 is a wasteful number, since it uses less digits than its factorization.

216425632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218212 (or 218204 counting only the distinct ones).

The product of its digits is 17280, while the sum is 31.

The square root of 216425632 is about 14711.4116249937. The cubic root of 216425632 is about 600.3938451238.

The spelling of 216425632 in words is "two hundred sixteen million, four hundred twenty-five thousand, six hundred thirty-two".