216260252 has 24 divisors (see below), whose sum is σ = 414481200. Its totient is φ = 98119296.

The previous prime is 216260243. The next prime is 216260257. The reversal of 216260252 is 252062612.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216260257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32177 + ... + 38312.

It is an arithmetic number, because the mean of its divisors is an integer number (17270050).

Almost surely, 2^216260252 is an apocalyptic number.

It is an amenable number.

216260252 is a deficient number, since it is larger than the sum of its proper divisors (198220948).

216260252 is a wasteful number, since it uses less digits than its factorization.

216260252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70565 (or 70563 counting only the distinct ones).

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

The square root of 216260252 is about 14705.7897441790. The cubic root of 216260252 is about 600.2408773580.

The spelling of 216260252 in words is "two hundred sixteen million, two hundred sixty thousand, two hundred fifty-two".