20270979388 has 48 divisors (see below), whose sum is σ = 40754528640. Its totient is φ = 8725147200.

The previous prime is 20270979383. The next prime is 20270979389. The reversal of 20270979388 is 88397907202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20270979383) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2513170 + ... + 2521222.

It is an arithmetic number, because the mean of its divisors is an integer number (849052680).

Almost surely, 2^20270979388 is an apocalyptic number.

It is an amenable number.

20270979388 is an abundant number, since it is smaller than the sum of its proper divisors (20483549252).

20270979388 is a wasteful number, since it uses less digits than its factorization.

20270979388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11098 (or 11096 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 55.

The spelling of 20270979388 in words is "twenty billion, two hundred seventy million, nine hundred seventy-nine thousand, three hundred eighty-eight".