20791498 has 32 divisors (see below), whose sum is σ = 38949120. Its totient is φ = 8104320.

The previous prime is 20791487. The next prime is 20791501. The reversal of 20791498 is 89419702.

It is a self number, because there is not a number n which added to its sum of digits gives 20791498.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 12118 + ... + 13726.

It is an arithmetic number, because the mean of its divisors is an integer number (1217160).

Almost surely, 2^20791498 is an apocalyptic number.

20791498 is a deficient number, since it is larger than the sum of its proper divisors (18157622).

20791498 is a wasteful number, since it uses less digits than its factorization.

20791498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1702.

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 20791498 is about 4559.7695117188. The cubic root of 20791498 is about 274.9762976817.

The spelling of 20791498 in words is "twenty million, seven hundred ninety-one thousand, four hundred ninety-eight".