21162652 has 12 divisors (see below), whose sum is σ = 42325360. Its totient is φ = 9069696.

The previous prime is 21162641. The next prime is 21162653. The reversal of 21162652 is 25626112.

21162652 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21162653) 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, 377877 + ... + 377932.

Almost surely, 2^21162652 is an apocalyptic number.

It is an amenable number.

21162652 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21162652 is a wasteful number, since it uses less digits than its factorization.

21162652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 755820 (or 755818 counting only the distinct ones).

The product of its digits is 1440, while the sum is 25.

The square root of 21162652 is about 4600.2882518381. The cubic root of 21162652 is about 276.6028794415.

Adding to 21162652 its reverse (25626112), we get a palindrome (46788764).

The spelling of 21162652 in words is "twenty-one million, one hundred sixty-two thousand, six hundred fifty-two".