20331748 has 12 divisors (see below), whose sum is σ = 37453360. Its totient is φ = 9630792.

The previous prime is 20331743. The next prime is 20331761. The reversal of 20331748 is 84713302.

It is not an unprimeable number, because it can be changed into a prime (20331743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133686 + ... + 133837.

Almost surely, 2^20331748 is an apocalyptic number.

It is an amenable number.

20331748 is a deficient number, since it is larger than the sum of its proper divisors (17121612).

20331748 is a wasteful number, since it uses less digits than its factorization.

20331748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267546 (or 267544 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 20331748 is about 4509.0739625781. The cubic root of 20331748 is about 272.9343766557.

The spelling of 20331748 in words is "twenty million, three hundred thirty-one thousand, seven hundred forty-eight".