21112368 has 40 divisors (see below), whose sum is σ = 57750768. Its totient is φ = 6623232.

The previous prime is 21112361. The next prime is 21112369. The reversal of 21112368 is 86321112.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (21112361) 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, 12121 + ... + 13752.

Almost surely, 2^21112368 is an apocalyptic number.

It is an amenable number.

21112368 is an abundant number, since it is smaller than the sum of its proper divisors (36638400).

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

21112368 is a wasteful number, since it uses less digits than its factorization.

21112368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25901 (or 25895 counting only the distinct ones).

The product of its digits is 576, while the sum is 24.

The square root of 21112368 is about 4594.8196917833. The cubic root of 21112368 is about 276.3836295135.

The spelling of 21112368 in words is "twenty-one million, one hundred twelve thousand, three hundred sixty-eight".