28783023570 has 160 divisors (see below), whose sum is σ = 88834382208. Its totient is φ = 6550440192.

The previous prime is 28783023557. The next prime is 28783023617. The reversal of 28783023570 is 7532038782.

28783023570 is a `hidden beast` number, since 2 + 8 + 78 + 3 + 0 + 2 + 3 + 570 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1310217 + ... + 1332003.

Almost surely, 2^28783023570 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28783023570, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44417191104).

28783023570 is an abundant number, since it is smaller than the sum of its proper divisors (60051358638).

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

28783023570 is a wasteful number, since it uses less digits than its factorization.

28783023570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22046 (or 22037 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 45.

The spelling of 28783023570 in words is "twenty-eight billion, seven hundred eighty-three million, twenty-three thousand, five hundred seventy".