21116292 has 24 divisors (see below), whose sum is σ = 50971200. Its totient is φ = 6795936.

The previous prime is 21116287. The next prime is 21116297. The reversal of 21116292 is 29261112.

It is an interprime number because it is at equal distance from previous prime (21116287) and next prime (21116297).

It is not an unprimeable number, because it can be changed into a prime (21116297) 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, 29992 + ... + 30687.

It is an arithmetic number, because the mean of its divisors is an integer number (2123800).

Almost surely, 2^21116292 is an apocalyptic number.

It is an amenable number.

21116292 is an abundant number, since it is smaller than the sum of its proper divisors (29854908).

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

21116292 is a wasteful number, since it uses less digits than its factorization.

21116292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60715 (or 60713 counting only the distinct ones).

The product of its digits is 432, while the sum is 24.

The square root of 21116292 is about 4595.2466745540. The cubic root of 21116292 is about 276.4007515811.

The spelling of 21116292 in words is "twenty-one million, one hundred sixteen thousand, two hundred ninety-two".