21174652 has 12 divisors (see below), whose sum is σ = 37139256. Its totient is φ = 10563440.

The previous prime is 21174641. The next prime is 21174653. The reversal of 21174652 is 25647112.

It is a super-2 number, since 2×21174652² = 896731774642208, 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 21174652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21174653) 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, 3898 + ... + 7585.

It is an arithmetic number, because the mean of its divisors is an integer number (3094938).

Almost surely, 2^21174652 is an apocalyptic number.

It is an amenable number.

21174652 is a deficient number, since it is larger than the sum of its proper divisors (15964604).

21174652 is a wasteful number, since it uses less digits than its factorization.

21174652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11948 (or 11946 counting only the distinct ones).

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

The square root of 21174652 is about 4601.5923330951. The cubic root of 21174652 is about 276.6551508892.

The spelling of 21174652 in words is "twenty-one million, one hundred seventy-four thousand, six hundred fifty-two".