20011948 has 36 divisors (see below), whose sum is σ = 38878560. Its totient is φ = 9005920.

The previous prime is 20011919. The next prime is 20011951. The reversal of 20011948 is 84911002.

It is a happy number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 83613 + ... + 83851.

It is an arithmetic number, because the mean of its divisors is an integer number (1079960).

Almost surely, 2^20011948 is an apocalyptic number.

It is an amenable number.

20011948 is a deficient number, since it is larger than the sum of its proper divisors (18866612).

20011948 is a wasteful number, since it uses less digits than its factorization.

20011948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438 (or 425 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 20011948 is about 4473.4715825631. The cubic root of 20011948 is about 271.4958040021.

The spelling of 20011948 in words is "twenty million, eleven thousand, nine hundred forty-eight".