28894075620 has 48 divisors (see below), whose sum is σ = 82110936768. Its totient is φ = 7590084480.

The previous prime is 28894075603. The next prime is 28894075627. The reversal of 28894075620 is 2657049882.

It is not an unprimeable number, because it can be changed into a prime (28894075627) 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, 3589771 + ... + 3597810.

It is an arithmetic number, because the mean of its divisors is an integer number (1710644516).

Almost surely, 2^28894075620 is an apocalyptic number.

28894075620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28894075620 is an abundant number, since it is smaller than the sum of its proper divisors (53216861148).

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

28894075620 is a wasteful number, since it uses less digits than its factorization.

28894075620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7187660 (or 7187658 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 51.

The spelling of 28894075620 in words is "twenty-eight billion, eight hundred ninety-four million, seventy-five thousand, six hundred twenty".