216253536 has 48 divisors (see below), whose sum is σ = 580878144. Its totient is φ = 70406784.

The previous prime is 216253519. The next prime is 216253537. The reversal of 216253536 is 635352612.

It is a tau number, because it is divible by the number of its divisors (48).

It is a junction number, because it is equal to n+sod(n) for n = 216253497 and 216253506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216253537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22066 + ... + 30321.

It is an arithmetic number, because the mean of its divisors is an integer number (12101628).

Almost surely, 2^216253536 is an apocalyptic number.

It is an amenable number.

216253536 is an abundant number, since it is smaller than the sum of its proper divisors (364624608).

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

216253536 is a wasteful number, since it uses less digits than its factorization.

216253536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52443 (or 52435 counting only the distinct ones).

The product of its digits is 32400, while the sum is 33.

The square root of 216253536 is about 14705.5613969682. The cubic root of 216253536 is about 600.2346637651.

The spelling of 216253536 in words is "two hundred sixteen million, two hundred fifty-three thousand, five hundred thirty-six".