20948472 has 48 divisors (see below), whose sum is σ = 57194280. Its totient is φ = 6926400.

The previous prime is 20948429. The next prime is 20948483. The reversal of 20948472 is 27484902.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8322 + ... + 10542.

Almost surely, 2^20948472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20948472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28597140).

20948472 is an abundant number, since it is smaller than the sum of its proper divisors (36245808).

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

20948472 is a wasteful number, since it uses less digits than its factorization.

20948472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2364 (or 2357 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 20948472 is about 4576.9500761970. The cubic root of 20948472 is about 275.6665791007. Note that the first 3 decimals are identical.

The spelling of 20948472 in words is "twenty million, nine hundred forty-eight thousand, four hundred seventy-two".