21476152 has 16 divisors (see below), whose sum is σ = 40475160. Its totient is φ = 10682784.

The previous prime is 21476131. The next prime is 21476159. The reversal of 21476152 is 25167412.

It is a super-2 number, since 2×21476152² = 922450209454208, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21476152.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21476159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5238 + ... + 8389.

Almost surely, 2^21476152 is an apocalyptic number.

It is an amenable number.

21476152 is a deficient number, since it is larger than the sum of its proper divisors (18999008).

21476152 is a wasteful number, since it uses less digits than its factorization.

21476152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13830 (or 13826 counting only the distinct ones).

The product of its digits is 3360, while the sum is 28.

The square root of 21476152 is about 4634.2369382672. The cubic root of 21476152 is about 277.9620395695.

The spelling of 21476152 in words is "twenty-one million, four hundred seventy-six thousand, one hundred fifty-two".