28454730570 has 160 divisors (see below), whose sum is σ = 87524236800. Its totient is φ = 6497812224.

The previous prime is 28454730547. The next prime is 28454730583. The reversal of 28454730570 is 7503745482.

28454730570 is a `hidden beast` number, since 2 + 8 + 4 + 5 + 4 + 73 + 0 + 570 = 666.

It is a super-2 number, since 2×28454730570² (a number of 22 digits) contains 22 as substring.

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, 9121471 + ... + 9124589.

It is an arithmetic number, because the mean of its divisors is an integer number (547026480).

Almost surely, 2^28454730570 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28454730570, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43762118400).

28454730570 is an abundant number, since it is smaller than the sum of its proper divisors (59069506230).

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

28454730570 is a wasteful number, since it uses less digits than its factorization.

28454730570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4754 (or 4745 counting only the distinct ones).

The product of its (nonzero) digits is 940800, while the sum is 45.

The spelling of 28454730570 in words is "twenty-eight billion, four hundred fifty-four million, seven hundred thirty thousand, five hundred seventy".