21060048 has 40 divisors (see below), whose sum is σ = 54572896. Its totient is φ = 6998400.

The previous prime is 21060023. The next prime is 21060049. The reversal of 21060048 is 84006012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21060049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25563 + ... + 26373.

Almost surely, 2^21060048 is an apocalyptic number.

It is an amenable number.

21060048 is an abundant number, since it is smaller than the sum of its proper divisors (33512848).

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

21060048 is a wasteful number, since it uses less digits than its factorization.

21060048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1363 (or 1357 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 21060048 is about 4589.1227919941. The cubic root of 21060048 is about 276.1551322796.

It can be divided in two parts, 2106004 and 8, that added together give a palindrome (2106012).

The spelling of 21060048 in words is "twenty-one million, sixty thousand, forty-eight".