28367365572 has 432 divisors, whose sum is σ = 93822456000. Its totient is φ = 7156283904.

The previous prime is 28367365561. The next prime is 28367365573. The reversal of 28367365572 is 27556376382.

It is a happy number.

28367365572 is a `hidden beast` number, since 2 + 8 + 3 + 6 + 7 + 3 + 65 + 572 = 666.

Its product of digits (12700800) is a multiple of the sum of its prime factors (640).

It is not an unprimeable number, because it can be changed into a prime (28367365573) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 56848179 + ... + 56848677.

Almost surely, 2^28367365572 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 28367365572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46911228000).

28367365572 is an abundant number, since it is smaller than the sum of its proper divisors (65455090428).

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

28367365572 is a wasteful number, since it uses less digits than its factorization.

28367365572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640 (or 628 counting only the distinct ones).

The product of its digits is 12700800, while the sum is 54.

The spelling of 28367365572 in words is "twenty-eight billion, three hundred sixty-seven million, three hundred sixty-five thousand, five hundred seventy-two".