21862848 has 56 divisors (see below), whose sum is σ = 66113152. Its totient is φ = 6246144.

The previous prime is 21862829. The next prime is 21862861. The reversal of 21862848 is 84826812.

It is a tau number, because it is divible by the number of its divisors (56).

It is a super-2 number, since 2×21862848² = 955968245342208, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

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 7 ways as a sum of consecutive naturals, for example, 6790 + ... + 9477.

It is an arithmetic number, because the mean of its divisors is an integer number (1180592).

Almost surely, 2^21862848 is an apocalyptic number.

21862848 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

21862848 is an abundant number, since it is smaller than the sum of its proper divisors (44250304).

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

21862848 is a wasteful number, since it uses less digits than its factorization.

21862848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16289 (or 16279 counting only the distinct ones).

The product of its digits is 49152, while the sum is 39.

The square root of 21862848 is about 4675.7724495531. The cubic root of 21862848 is about 279.6204380876.

The spelling of 21862848 in words is "twenty-one million, eight hundred sixty-two thousand, eight hundred forty-eight".