90285998782 has 16 divisors (see below), whose sum is σ = 154797043680. Its totient is φ = 38688738048.

The previous prime is 90285998743. The next prime is 90285998797. The reversal of 90285998782 is 28789958209.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 330907 + ... + 538582.

It is an arithmetic number, because the mean of its divisors is an integer number (9674815230).

Almost surely, 2^90285998782 is an apocalyptic number.

90285998782 is a deficient number, since it is larger than the sum of its proper divisors (64511044898).

90285998782 is a wasteful number, since it uses less digits than its factorization.

90285998782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 876915.

The product of its (nonzero) digits is 52254720, while the sum is 67.

The spelling of 90285998782 in words is "ninety billion, two hundred eighty-five million, nine hundred ninety-eight thousand, seven hundred eighty-two".