28999997862 has 64 divisors (see below), whose sum is σ = 67079190528. Its totient is φ = 8274528000.

The previous prime is 28999997849. The next prime is 28999997891. The reversal of 28999997862 is 26879999982.

It is a congruent number.

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, 115839 + ... + 267242.

It is an arithmetic number, because the mean of its divisors is an integer number (1048112352).

Almost surely, 2^28999997862 is an apocalyptic number.

28999997862 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28999997862 is an abundant number, since it is smaller than the sum of its proper divisors (38079192666).

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

28999997862 is a wasteful number, since it uses less digits than its factorization.

28999997862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383165.

The product of its digits is 634894848, while the sum is 78.

The spelling of 28999997862 in words is "twenty-eight billion, nine hundred ninety-nine million, nine hundred ninety-seven thousand, eight hundred sixty-two".