21162848 has 24 divisors (see below), whose sum is σ = 47616912. Its totient is φ = 9069696.

The previous prime is 21162839. The next prime is 21162851. The reversal of 21162848 is 84826112.

It is a happy number.

It is a super-2 number, since 2×21162848² = 895732270942208, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 47015 + ... + 47462.

It is an arithmetic number, because the mean of its divisors is an integer number (1984038).

Almost surely, 2^21162848 is an apocalyptic number.

21162848 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

21162848 is an abundant number, since it is smaller than the sum of its proper divisors (26454064).

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

21162848 is an equidigital number, since it uses as much as digits as its factorization.

21162848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94494 (or 94486 counting only the distinct ones).

The product of its digits is 6144, while the sum is 32.

The square root of 21162848 is about 4600.3095548017. The cubic root of 21162848 is about 276.6037333672.

The spelling of 21162848 in words is "twenty-one million, one hundred sixty-two thousand, eight hundred forty-eight".