21452848 has 10 divisors (see below), whose sum is σ = 41564924. Its totient is φ = 10726416.

The previous prime is 21452839. The next prime is 21452857. The reversal of 21452848 is 84825412.

It is an interprime number because it is at equal distance from previous prime (21452839) and next prime (21452857).

It is a super-2 number, since 2×21452848² = 920449374622208, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 670386 + ... + 670417.

Almost surely, 2^21452848 is an apocalyptic number.

It is an amenable number.

21452848 is a deficient number, since it is larger than the sum of its proper divisors (20112076).

21452848 is a wasteful number, since it uses less digits than its factorization.

21452848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1340811 (or 1340805 counting only the distinct ones).

The product of its digits is 20480, while the sum is 34.

The square root of 21452848 is about 4631.7219260228. The cubic root of 21452848 is about 277.8614633309.

The spelling of 21452848 in words is "twenty-one million, four hundred fifty-two thousand, eight hundred forty-eight".