83900128 has 24 divisors (see below), whose sum is σ = 177885288. Its totient is φ = 38722944.

The previous prime is 83900107. The next prime is 83900149. The reversal of 83900128 is 82100938.

It is an interprime number because it is at equal distance from previous prime (83900107) and next prime (83900149).

It is a self number, because there is not a number n which added to its sum of digits gives 83900128.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100426 + ... + 101257.

It is an arithmetic number, because the mean of its divisors is an integer number (7411887).

Almost surely, 2^83900128 is an apocalyptic number.

It is an amenable number.

83900128 is an abundant number, since it is smaller than the sum of its proper divisors (93985160).

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

83900128 is a wasteful number, since it uses less digits than its factorization.

83900128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201706 (or 201698 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 83900128 is about 9159.7013051737. The cubic root of 83900128 is about 437.7782771650.

The spelling of 83900128 in words is "eighty-three million, nine hundred thousand, one hundred twenty-eight".