90028684134 has 24 divisors (see below), whose sum is σ = 195563609280. Its totient is φ = 29932413648.

The previous prime is 90028684121. The next prime is 90028684157. The reversal of 90028684134 is 43148682009.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 90028684134.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6421782 + ... + 6435785.

It is an arithmetic number, because the mean of its divisors is an integer number (8148483720).

Almost surely, 2^90028684134 is an apocalyptic number.

90028684134 is an abundant number, since it is smaller than the sum of its proper divisors (105534925146).

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

90028684134 is a wasteful number, since it uses less digits than its factorization.

90028684134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12857964 (or 12857961 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The spelling of 90028684134 in words is "ninety billion, twenty-eight million, six hundred eighty-four thousand, one hundred thirty-four".