21514936 has 16 divisors (see below), whose sum is σ = 42094800. Its totient is φ = 10289664.

The previous prime is 21514931. The next prime is 21514937. The reversal of 21514936 is 63941512.

It is a junction number, because it is equal to n+sod(n) for n = 21514898 and 21514907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21514931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58281 + ... + 58648.

It is an arithmetic number, because the mean of its divisors is an integer number (2630925).

Almost surely, 2^21514936 is an apocalyptic number.

It is an amenable number.

21514936 is a deficient number, since it is larger than the sum of its proper divisors (20579864).

21514936 is a wasteful number, since it uses less digits than its factorization.

21514936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116958 (or 116954 counting only the distinct ones).

The product of its digits is 6480, while the sum is 31.

The square root of 21514936 is about 4638.4195584272. The cubic root of 21514936 is about 278.1292637650.

It can be divided in two parts, 215 and 14936, that added together give a palindrome (15151).

The spelling of 21514936 in words is "twenty-one million, five hundred fourteen thousand, nine hundred thirty-six".