21614124 has 24 divisors (see below), whose sum is σ = 57637888. Its totient is φ = 6175440.

The previous prime is 21614057. The next prime is 21614141. The reversal of 21614124 is 42141612.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

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

It is a self number, because there is not a number n which added to its sum of digits gives 21614124.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128572 + ... + 128739.

Almost surely, 2^21614124 is an apocalyptic number.

It is an amenable number.

21614124 is an abundant number, since it is smaller than the sum of its proper divisors (36023764).

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

21614124 is a wasteful number, since it uses less digits than its factorization.

21614124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257325 (or 257323 counting only the distinct ones).

The product of its digits is 384, while the sum is 21.

The square root of 21614124 is about 4649.0992676001. The cubic root of 21614124 is about 278.5560184582.

Adding to 21614124 its reverse (42141612), we get a palindrome (63755736).

The spelling of 21614124 in words is "twenty-one million, six hundred fourteen thousand, one hundred twenty-four".