21848616 has 48 divisors (see below), whose sum is σ = 61370400. Its totient is φ = 7282224.

The previous prime is 21848609. The next prime is 21848639. The reversal of 21848616 is 61684812.

It is a super-2 number, since 2×21848616² = 954724042230912, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3676 + ... + 7563.

It is an arithmetic number, because the mean of its divisors is an integer number (1278550).

Almost surely, 2^21848616 is an apocalyptic number.

It is an amenable number.

21848616 is an abundant number, since it is smaller than the sum of its proper divisors (39521784).

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

21848616 is a wasteful number, since it uses less digits than its factorization.

21848616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11260 (or 11244 counting only the distinct ones).

The product of its digits is 18432, while the sum is 36.

The square root of 21848616 is about 4674.2503142215. The cubic root of 21848616 is about 279.5597503262.

The spelling of 21848616 in words is "twenty-one million, eight hundred forty-eight thousand, six hundred sixteen".