28626490368 has 704 divisors, whose sum is σ = 103758336000. Its totient is φ = 7620231168.

The previous prime is 28626490313. The next prime is 28626490381. The reversal of 28626490368 is 86309462682.

28626490368 is a `hidden beast` number, since 2 + 8 + 626 + 4 + 9 + 0 + 3 + 6 + 8 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 262628298 + ... + 262628406.

It is an arithmetic number, because the mean of its divisors is an integer number (147384000).

Almost surely, 2^28626490368 is an apocalyptic number.

28626490368 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 28626490368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51879168000).

28626490368 is an abundant number, since it is smaller than the sum of its proper divisors (75131845632).

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

28626490368 is a wasteful number, since it uses less digits than its factorization.

28626490368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227 (or 203 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 54.

The spelling of 28626490368 in words is "twenty-eight billion, six hundred twenty-six million, four hundred ninety thousand, three hundred sixty-eight".