21514616 has 16 divisors (see below), whose sum is σ = 40740840. Its totient is φ = 10650400.

The previous prime is 21514613. The next prime is 21514643. The reversal of 21514616 is 61641512.

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21514613) 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, 12506 + ... + 14121.

Almost surely, 2^21514616 is an apocalyptic number.

It is an amenable number.

21514616 is a deficient number, since it is larger than the sum of its proper divisors (19226224).

21514616 is a wasteful number, since it uses less digits than its factorization.

21514616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26734 (or 26730 counting only the distinct ones).

The product of its digits is 1440, while the sum is 26.

The square root of 21514616 is about 4638.3850637911. The cubic root of 21514616 is about 278.1278848499.

The spelling of 21514616 in words is "twenty-one million, five hundred fourteen thousand, six hundred sixteen".