21162468 has 12 divisors (see below), whose sum is σ = 49379120. Its totient is φ = 7054152.

The previous prime is 21162439. The next prime is 21162469. The reversal of 21162468 is 86426112.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (21162469) 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, 881758 + ... + 881781.

Almost surely, 2^21162468 is an apocalyptic number.

It is an amenable number.

21162468 is an abundant number, since it is smaller than the sum of its proper divisors (28216652).

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

21162468 is a wasteful number, since it uses less digits than its factorization.

21162468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1763546 (or 1763544 counting only the distinct ones).

The product of its digits is 4608, while the sum is 30.

The square root of 21162468 is about 4600.2682530479. The cubic root of 21162468 is about 276.6020777921.

The spelling of 21162468 in words is "twenty-one million, one hundred sixty-two thousand, four hundred sixty-eight".