21476048 has 30 divisors (see below), whose sum is σ = 45740562. Its totient is φ = 9760960.

The previous prime is 21476027. The next prime is 21476051. The reversal of 21476048 is 84067412.

It can be written as a sum of positive squares in only one way, i.e., 20539024 + 937024 = 4532^2 + 968^2 .

It is a super-2 number, since 2×21476048² = 922441275396608, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3611 + ... + 7482.

Almost surely, 2^21476048 is an apocalyptic number.

It is an amenable number.

21476048 is an abundant number, since it is smaller than the sum of its proper divisors (24264514).

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

21476048 is a wasteful number, since it uses less digits than its factorization.

21476048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11123 (or 11106 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 21476048 is about 4634.2257174203. The cubic root of 21476048 is about 277.9615908842.

The spelling of 21476048 in words is "twenty-one million, four hundred seventy-six thousand, forty-eight".