216234536 has 32 divisors (see below), whose sum is σ = 467959680. Its totient is φ = 91752000.

The previous prime is 216234511. The next prime is 216234553. The reversal of 216234536 is 635432612.

216234536 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its 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, 13460 + ... + 24771.

It is an arithmetic number, because the mean of its divisors is an integer number (14623740).

Almost surely, 2^216234536 is an apocalyptic number.

It is an amenable number.

216234536 is an abundant number, since it is smaller than the sum of its proper divisors (251725144).

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

216234536 is a wasteful number, since it uses less digits than its factorization.

216234536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38345 (or 38341 counting only the distinct ones).

The product of its digits is 25920, while the sum is 32.

The square root of 216234536 is about 14704.9153686786. The cubic root of 216234536 is about 600.2170844108.

The spelling of 216234536 in words is "two hundred sixteen million, two hundred thirty-four thousand, five hundred thirty-six".