21060152 has 16 divisors (see below), whose sum is σ = 39665160. Its totient is φ = 10482784.

The previous prime is 21060139. The next prime is 21060163. The reversal of 21060152 is 25106012.

It is a self number, because there is not a number n which added to its sum of digits gives 21060152.

It is a congruent number.

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, 3983 + ... + 7614.

Almost surely, 2^21060152 is an apocalyptic number.

It is an amenable number.

21060152 is a deficient number, since it is larger than the sum of its proper divisors (18605008).

21060152 is a wasteful number, since it uses less digits than its factorization.

21060152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11830 (or 11826 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 21060152 is about 4589.1341231217. The cubic root of 21060152 is about 276.1555868542.

Adding to 21060152 its reverse (25106012), we get a palindrome (46166164).

It can be divided in two parts, 21060 and 152, that added together give a palindrome (21212).

The spelling of 21060152 in words is "twenty-one million, sixty thousand, one hundred fifty-two".