90020112 has 160 divisors (see below), whose sum is σ = 294481152. Its totient is φ = 23058432.

The previous prime is 90020111. The next prime is 90020141. The reversal of 90020112 is 21102009.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 90020091 and 90020100.

It is not an unprimeable number, because it can be changed into a prime (90020111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 161338 + ... + 161894.

Almost surely, 2^90020112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90020112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147240576).

90020112 is an abundant number, since it is smaller than the sum of its proper divisors (204461040).

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

90020112 is a wasteful number, since it uses less digits than its factorization.

90020112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625 (or 619 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 90020112 is about 9487.8929167650. The cubic root of 90020112 is about 448.1738536555.

It can be divided in two parts, 900 and 20112, that added together give a palindrome (21012).

The spelling of 90020112 in words is "ninety million, twenty thousand, one hundred twelve".