20494838 has 24 divisors (see below), whose sum is σ = 38514672. Its totient is φ = 8107344.

The previous prime is 20494829. The next prime is 20494847. The reversal of 20494838 is 83849402.

It is an interprime number because it is at equal distance from previous prime (20494829) and next prime (20494847).

It is a Curzon number.

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, 6770 + ... + 9317.

It is an arithmetic number, because the mean of its divisors is an integer number (1604778).

Almost surely, 2^20494838 is an apocalyptic number.

20494838 is a deficient number, since it is larger than the sum of its proper divisors (18019834).

20494838 is a wasteful number, since it uses less digits than its factorization.

20494838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16116 (or 16109 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 20494838 is about 4527.1224856414. The cubic root of 20494838 is about 273.6622100567.

The spelling of 20494838 in words is "twenty million, four hundred ninety-four thousand, eight hundred thirty-eight".