20148972 has 48 divisors (see below), whose sum is σ = 48384000. Its totient is φ = 6523840.

The previous prime is 20148967. The next prime is 20149009. The reversal of 20148972 is 27984102.

It is a happy number.

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, 105397 + ... + 105587.

It is an arithmetic number, because the mean of its divisors is an integer number (1008000).

Almost surely, 2^20148972 is an apocalyptic number.

It is an amenable number.

20148972 is an abundant number, since it is smaller than the sum of its proper divisors (28235028).

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

20148972 is a wasteful number, since it uses less digits than its factorization.

20148972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406 (or 404 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 20148972 is about 4488.7606307309. The cubic root of 20148972 is about 272.1140489145.

The spelling of 20148972 in words is "twenty million, one hundred forty-eight thousand, nine hundred seventy-two".