21048060 has 48 divisors (see below), whose sum is σ = 64294272. Its totient is φ = 5102400.

The previous prime is 21048019. The next prime is 21048061. The reversal of 21048060 is 6084012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21048061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15286 + ... + 16605.

It is an arithmetic number, because the mean of its divisors is an integer number (1339464).

Almost surely, 2^21048060 is an apocalyptic number.

21048060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21048060 is an abundant number, since it is smaller than the sum of its proper divisors (43246212).

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

21048060 is a wasteful number, since it uses less digits than its factorization.

21048060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31914 (or 31912 counting only the distinct ones).

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

The square root of 21048060 is about 4587.8164740975. The cubic root of 21048060 is about 276.1027237875.

The spelling of 21048060 in words is "twenty-one million, forty-eight thousand, sixty".