21450848 has 24 divisors (see below), whose sum is σ = 44455320. Its totient is φ = 10160640.

The previous prime is 21450839. The next prime is 21450859. The reversal of 21450848 is 84805412.

It is a happy number.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17033 + ... + 18248.

It is an arithmetic number, because the mean of its divisors is an integer number (1852305).

Almost surely, 2^21450848 is an apocalyptic number.

It is an amenable number.

21450848 is an abundant number, since it is smaller than the sum of its proper divisors (23004472).

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

21450848 is a wasteful number, since it uses less digits than its factorization.

21450848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35310 (or 35302 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 32.

The square root of 21450848 is about 4631.5060185646. The cubic root of 21450848 is about 277.8528282661.

The spelling of 21450848 in words is "twenty-one million, four hundred fifty thousand, eight hundred forty-eight".