28020903013620 has 72 divisors (see below), whose sum is σ = 92723715433440. Its totient is φ = 6792946184640.

The previous prime is 28020903013567. The next prime is 28020903013651. The reversal of 28020903013620 is 2631030902082.

28020903013620 is a `hidden beast` number, since 2 + 8 + 0 + 20 + 9 + 0 + 3 + 0 + 1 + 3 + 620 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7075983630 + ... + 7075987589.

It is an arithmetic number, because the mean of its divisors is an integer number (1287829381020).

Almost surely, 2^{28020903013620} is an apocalyptic number.

28020903013620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28020903013620 is an abundant number, since it is smaller than the sum of its proper divisors (64702812419820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28020903013620 is a wasteful number, since it uses less digits than its factorization.

28020903013620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14151971245 (or 14151971240 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The spelling of 28020903013620 in words is "twenty-eight trillion, twenty billion, nine hundred three million, thirteen thousand, six hundred twenty".