21948752 has 20 divisors (see below), whose sum is σ = 48601056. Its totient is φ = 9406560.

The previous prime is 21948749. The next prime is 21948761. The reversal of 21948752 is 25784912.

It is a congruent number.

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, 97874 + ... + 98097.

Almost surely, 2^21948752 is an apocalyptic number.

It is an amenable number.

21948752 is an abundant number, since it is smaller than the sum of its proper divisors (26652304).

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

21948752 is a wasteful number, since it uses less digits than its factorization.

21948752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195986 (or 195980 counting only the distinct ones).

The product of its digits is 40320, while the sum is 38.

The square root of 21948752 is about 4684.9495194719. The cubic root of 21948752 is about 279.9861897951.

The spelling of 21948752 in words is "twenty-one million, nine hundred forty-eight thousand, seven hundred fifty-two".