21474048 has 36 divisors (see below), whose sum is σ = 57154328. Its totient is φ = 7157760.

The previous prime is 21474031. The next prime is 21474059. The reversal of 21474048 is 84047412.

It is a super-3 number, since 3×21474048³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

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, 13213 + ... + 14748.

Almost surely, 2^21474048 is an apocalyptic number.

It is an amenable number.

21474048 is an abundant number, since it is smaller than the sum of its proper divisors (35680280).

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

21474048 is an equidigital number, since it uses as much as digits as its factorization.

21474048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27980 (or 27966 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 30.

The square root of 21474048 is about 4634.0099266186. The cubic root of 21474048 is about 277.9529620397.

It can be divided in two parts, 2147404 and 8, that added together give a palindrome (2147412).

The spelling of 21474048 in words is "twenty-one million, four hundred seventy-four thousand, forty-eight".