28631255040 has 576 divisors, whose sum is σ = 106248542400. Its totient is φ = 7109738496.

The previous prime is 28631255039. The next prime is 28631255077. The reversal of 28631255040 is 4055213682.

28631255040 is a `hidden beast` number, since 2 + 8 + 63 + 1 + 2 + 550 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (576).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 28631254986 and 28631255004.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 145336222 + ... + 145336418.

It is an arithmetic number, because the mean of its divisors is an integer number (184459275).

Almost surely, 2^28631255040 is an apocalyptic number.

28631255040 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 28631255040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53124271200).

28631255040 is an abundant number, since it is smaller than the sum of its proper divisors (77617287360).

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

28631255040 is a wasteful number, since it uses less digits than its factorization.

28631255040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332 (or 309 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The spelling of 28631255040 in words is "twenty-eight billion, six hundred thirty-one million, two hundred fifty-five thousand, forty".