85890835728 has 100 divisors (see below), whose sum is σ = 254374395088. Its totient is φ = 27964440000.

The previous prime is 85890835721. The next prime is 85890835733. The reversal of 85890835728 is 82753809858.

85890835728 is a `hidden beast` number, since 8 + 58 + 9 + 0 + 8 + 3 + 572 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (85890835721) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 714898 + ... + 826353.

Almost surely, 2^85890835728 is an apocalyptic number.

It is an amenable number.

85890835728 is an abundant number, since it is smaller than the sum of its proper divisors (168483559360).

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

85890835728 is a wasteful number, since it uses less digits than its factorization.

85890835728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1541314 (or 1541299 counting only the distinct ones).

The product of its (nonzero) digits is 38707200, while the sum is 63.

The spelling of 85890835728 in words is "eighty-five billion, eight hundred ninety million, eight hundred thirty-five thousand, seven hundred twenty-eight".