21048452 has 12 divisors (see below), whose sum is σ = 37385040. Its totient is φ = 10367016.

The previous prime is 21048451. The next prime is 21048479. The reversal of 21048452 is 25484012.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (21048451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39002 + ... + 39537.

It is an arithmetic number, because the mean of its divisors is an integer number (3115420).

Almost surely, 2^21048452 is an apocalyptic number.

It is an amenable number.

21048452 is a deficient number, since it is larger than the sum of its proper divisors (16336588).

21048452 is a wasteful number, since it uses less digits than its factorization.

21048452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78610 (or 78608 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 26.

The square root of 21048452 is about 4587.8591957470. The cubic root of 21048452 is about 276.1044378267.

The spelling of 21048452 in words is "twenty-one million, forty-eight thousand, four hundred fifty-two".