216927513 has 48 divisors (see below), whose sum is σ = 364455936. Its totient is φ = 123018720.

The previous prime is 216927509. The next prime is 216927517. The reversal of 216927513 is 315729612.

216927513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (216927509) and next prime (216927517).

It is not a de Polignac number, because 216927513 - 2² = 216927509 is a prime.

It is not an unprimeable number, because it can be changed into a prime (216927517) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 106006 + ... + 108032.

It is an arithmetic number, because the mean of its divisors is an integer number (7592832).

Almost surely, 2^216927513 is an apocalyptic number.

216927513 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

216927513 is a deficient number, since it is larger than the sum of its proper divisors (147528423).

216927513 is a wasteful number, since it uses less digits than its factorization.

216927513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2114 (or 2111 counting only the distinct ones).

The product of its digits is 22680, while the sum is 36.

The square root of 216927513 is about 14728.4592880586. The cubic root of 216927513 is about 600.8575820045.

It can be divided in two parts, 216 and 927513, that added together give a palindrome (927729).

The spelling of 216927513 in words is "two hundred sixteen million, nine hundred twenty-seven thousand, five hundred thirteen".