28458372852 has 288 divisors, whose sum is σ = 90553229312. Its totient is φ = 7336562688.

The previous prime is 28458372821. The next prime is 28458372853. The reversal of 28458372852 is 25827385482.

28458372852 is a `hidden beast` number, since 2 + 8 + 4 + 583 + 7 + 2 + 8 + 52 = 666.

It is a super-2 number, since 2×28458372852² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28458372853) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 30371328 + ... + 30372264.

Almost surely, 2^28458372852 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28458372852, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45276614656).

28458372852 is an abundant number, since it is smaller than the sum of its proper divisors (62094856460).

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

28458372852 is a wasteful number, since it uses less digits than its factorization.

28458372852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1167 (or 1162 counting only the distinct ones).

The product of its digits is 8601600, while the sum is 54.

It can be divided in two parts, 284583 and 72852, that added together give a triangular number (357435 = T₈₄₅).

The spelling of 28458372852 in words is "twenty-eight billion, four hundred fifty-eight million, three hundred seventy-two thousand, eight hundred fifty-two".