20888248790 has 32 divisors (see below), whose sum is σ = 39593568960. Its totient is φ = 7918694784.

The previous prime is 20888248763. The next prime is 20888248807. The reversal of 20888248790 is 9784288802.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 391529 + ... + 441668.

It is an arithmetic number, because the mean of its divisors is an integer number (1237299030).

Almost surely, 2^20888248790 is an apocalyptic number.

20888248790 is a deficient number, since it is larger than the sum of its proper divisors (18705320170).

20888248790 is a wasteful number, since it uses less digits than its factorization.

20888248790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 833336.

The product of its (nonzero) digits is 4128768, while the sum is 56.

The spelling of 20888248790 in words is "twenty billion, eight hundred eighty-eight million, two hundred forty-eight thousand, seven hundred ninety".