216892461 has 16 divisors (see below), whose sum is σ = 311500800. Its totient is φ = 133845360.

The previous prime is 216892457. The next prime is 216892471. The reversal of 216892461 is 164298612.

216892461 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 216892461 - 2² = 216892457 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216892441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48561 + ... + 52838.

It is an arithmetic number, because the mean of its divisors is an integer number (19468800).

Almost surely, 2^216892461 is an apocalyptic number.

It is an amenable number.

216892461 is a deficient number, since it is larger than the sum of its proper divisors (94608339).

216892461 is a wasteful number, since it uses less digits than its factorization.

216892461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101456.

The product of its digits is 41472, while the sum is 39.

The square root of 216892461 is about 14727.2692988211. The cubic root of 216892461 is about 600.8252172848.

The spelling of 216892461 in words is "two hundred sixteen million, eight hundred ninety-two thousand, four hundred sixty-one".