28623538944 has 1080 divisors, whose sum is σ = 117234543888. Its totient is φ = 6827950080.

The previous prime is 28623538943. The next prime is 28623538961. The reversal of 28623538944 is 44983532682.

28623538944 is a `hidden beast` number, since 2 + 8 + 62 + 3 + 538 + 9 + 44 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (28623538943) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 145297054 + ... + 145297250.

Almost surely, 2^28623538944 is an apocalyptic number.

28623538944 is a gapful number since it is divisible by the number (24) 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 28623538944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58617271944).

28623538944 is an abundant number, since it is smaller than the sum of its proper divisors (88611004944).

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

28623538944 is a wasteful number, since it uses less digits than its factorization.

28623538944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263 (or 233 counting only the distinct ones).

The product of its digits is 9953280, while the sum is 54.

The spelling of 28623538944 in words is "twenty-eight billion, six hundred twenty-three million, five hundred thirty-eight thousand, nine hundred forty-four".