28455166740 has 384 divisors, whose sum is σ = 107654012928. Its totient is φ = 5423339520.

The previous prime is 28455166697. The next prime is 28455166759. The reversal of 28455166740 is 4766155482.

It is a self number, because there is not a number n which added to its sum of digits gives 28455166740.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 10028602 + ... + 10031438.

It is an arithmetic number, because the mean of its divisors is an integer number (280348992).

Almost surely, 2^28455166740 is an apocalyptic number.

28455166740 is a gapful number since it is divisible by the number (20) 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 28455166740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53827006464).

28455166740 is an abundant number, since it is smaller than the sum of its proper divisors (79198846188).

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

28455166740 is a wasteful number, since it uses less digits than its factorization.

28455166740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3047 (or 3045 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 48.

The spelling of 28455166740 in words is "twenty-eight billion, four hundred fifty-five million, one hundred sixty-six thousand, seven hundred forty".