28037264580 has 144 divisors (see below), whose sum is σ = 92054826864. Its totient is φ = 6866334720.

The previous prime is 28037264573. The next prime is 28037264581. The reversal of 28037264580 is 8546273082.

28037264580 is a `hidden beast` number, since 2 + 8 + 0 + 3 + 7 + 2 + 64 + 580 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 172975104 + 27864289476 = 13152^2 + 166926^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (28037264581) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 430570 + ... + 491390.

It is an arithmetic number, because the mean of its divisors is an integer number (639269631).

Almost surely, 2^28037264580 is an apocalyptic number.

28037264580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28037264580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46027413432).

28037264580 is an abundant number, since it is smaller than the sum of its proper divisors (64017562284).

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

28037264580 is a wasteful number, since it uses less digits than its factorization.

28037264580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61046 (or 61041 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

The spelling of 28037264580 in words is "twenty-eight billion, thirty-seven million, two hundred sixty-four thousand, five hundred eighty".