28917547386 has 64 divisors (see below), whose sum is σ = 72837101568. Its totient is φ = 7449236928.

The previous prime is 28917547357. The next prime is 28917547391. The reversal of 28917547386 is 68374571982.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 592366 + ... + 639321.

It is an arithmetic number, because the mean of its divisors is an integer number (1138079712).

Almost surely, 2^28917547386 is an apocalyptic number.

28917547386 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

28917547386 is an abundant number, since it is smaller than the sum of its proper divisors (43919554182).

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

28917547386 is a wasteful number, since it uses less digits than its factorization.

28917547386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1231755.

The product of its digits is 20321280, while the sum is 60.

The spelling of 28917547386 in words is "twenty-eight billion, nine hundred seventeen million, five hundred forty-seven thousand, three hundred eighty-six".