21048250 has 32 divisors (see below), whose sum is σ = 40098240. Its totient is φ = 8270800.

The previous prime is 21048239. The next prime is 21048263. The reversal of 21048250 is 5284012.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14037 + ... + 15463.

It is an arithmetic number, because the mean of its divisors is an integer number (1253070).

Almost surely, 2^21048250 is an apocalyptic number.

21048250 is a deficient number, since it is larger than the sum of its proper divisors (19049990).

21048250 is a wasteful number, since it uses less digits than its factorization.

21048250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1503 (or 1493 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 21048250 is about 4587.8371810691. The cubic root of 21048250 is about 276.1035545745.

The spelling of 21048250 in words is "twenty-one million, forty-eight thousand, two hundred fifty".