28858522440 has 64 divisors (see below), whose sum is σ = 94446077760. Its totient is φ = 6996005120.

The previous prime is 28858522417. The next prime is 28858522463. The reversal of 28858522440 is 4422585882.

It is an interprime number because it is at equal distance from previous prime (28858522417) and next prime (28858522463).

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 28858522440.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10929939 + ... + 10932578.

It is an arithmetic number, because the mean of its divisors is an integer number (1475719965).

Almost surely, 2^28858522440 is an apocalyptic number.

28858522440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28858522440 is an abundant number, since it is smaller than the sum of its proper divisors (65587555320).

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

28858522440 is a wasteful number, since it uses less digits than its factorization.

28858522440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21862542 (or 21862538 counting only the distinct ones).

The product of its (nonzero) digits is 1638400, while the sum is 48.

The spelling of 28858522440 in words is "twenty-eight billion, eight hundred fifty-eight million, five hundred twenty-two thousand, four hundred forty".