20042948 has 12 divisors (see below), whose sum is σ = 36921360. Its totient is φ = 9493992.

The previous prime is 20042947. The next prime is 20042951. The reversal of 20042948 is 84924002.

It is a self number, because there is not a number n which added to its sum of digits gives 20042948.

It is not an unprimeable number, because it can be changed into a prime (20042947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131786 + ... + 131937.

It is an arithmetic number, because the mean of its divisors is an integer number (3076780).

Almost surely, 2^20042948 is an apocalyptic number.

It is an amenable number.

20042948 is a deficient number, since it is larger than the sum of its proper divisors (16878412).

20042948 is a wasteful number, since it uses less digits than its factorization.

20042948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263746 (or 263744 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 20042948 is about 4476.9351123285. The cubic root of 20042948 is about 271.6359207597.

The spelling of 20042948 in words is "twenty million, forty-two thousand, nine hundred forty-eight".