28374435628 has 72 divisors (see below), whose sum is σ = 63827810816. Its totient is φ = 10797827040.

The previous prime is 28374435611. The next prime is 28374435673. The reversal of 28374435628 is 82653447382.

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48301 + ... + 243067.

Almost surely, 2^28374435628 is an apocalyptic number.

28374435628 is a gapful number since it is divisible by the number (28) 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 28374435628, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31913905408).

28374435628 is an abundant number, since it is smaller than the sum of its proper divisors (35453375188).

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

28374435628 is a wasteful number, since it uses less digits than its factorization.

28374435628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194843 (or 194830 counting only the distinct ones).

The product of its digits is 7741440, while the sum is 52.

The spelling of 28374435628 in words is "twenty-eight billion, three hundred seventy-four million, four hundred thirty-five thousand, six hundred twenty-eight".