28231526400 has 1296 divisors, whose sum is σ = 123183365760. Its totient is φ = 5677056000.

The previous prime is 28231526359. The next prime is 28231526413. The reversal of 28231526400 is 462513282.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 910694385 + ... + 910694415.

Almost surely, 2^28231526400 is an apocalyptic number.

28231526400 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 28231526400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61591682880).

28231526400 is an abundant number, since it is smaller than the sum of its proper divisors (94951839360).

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

28231526400 is a wasteful number, since it uses less digits than its factorization.

28231526400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102 (or 59 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

The spelling of 28231526400 in words is "twenty-eight billion, two hundred thirty-one million, five hundred twenty-six thousand, four hundred".