21465652 has 24 divisors (see below), whose sum is σ = 41319936. Its totient is φ = 9695328.

The previous prime is 21465637. The next prime is 21465659. The reversal of 21465652 is 25656412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21465659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1948 + ... + 6835.

It is an arithmetic number, because the mean of its divisors is an integer number (1721664).

Almost surely, 2^21465652 is an apocalyptic number.

It is an amenable number.

21465652 is a deficient number, since it is larger than the sum of its proper divisors (19854284).

21465652 is a wasteful number, since it uses less digits than its factorization.

21465652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8847 (or 8845 counting only the distinct ones).

The product of its digits is 14400, while the sum is 31.

The square root of 21465652 is about 4633.1039271745. The cubic root of 21465652 is about 277.9167323035.

The spelling of 21465652 in words is "twenty-one million, four hundred sixty-five thousand, six hundred fifty-two".