21014152 has 16 divisors (see below), whose sum is σ = 41475600. Its totient is φ = 9954000.

The previous prime is 21014131. The next prime is 21014167. The reversal of 21014152 is 25141012.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68974 + ... + 69277.

It is an arithmetic number, because the mean of its divisors is an integer number (2592225).

Almost surely, 2^21014152 is an apocalyptic number.

It is an amenable number.

21014152 is a deficient number, since it is larger than the sum of its proper divisors (20461448).

21014152 is a wasteful number, since it uses less digits than its factorization.

21014152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138276 (or 138272 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 21014152 is about 4584.1195446890. The cubic root of 21014152 is about 275.9543787929.

Adding to 21014152 its reverse (25141012), we get a palindrome (46155164).

It can be divided in two parts, 21014 and 152, that multiplied together give a triangular number (3194128 = T₂₅₂₇).

The spelling of 21014152 in words is "twenty-one million, fourteen thousand, one hundred fifty-two".