890111012 has 48 divisors (see below), whose sum is σ = 1897728000. Its totient is φ = 356806944.

The previous prime is 890111011. The next prime is 890111093. The reversal of 890111012 is 210111098.

It is a super-2 number, since 2×890111012² = 1584595227367328288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (890111011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31439 + ... + 52617.

It is an arithmetic number, because the mean of its divisors is an integer number (39536000).

Almost surely, 2^890111012 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 890111012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (948864000).

890111012 is an abundant number, since it is smaller than the sum of its proper divisors (1007616988).

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

890111012 is a wasteful number, since it uses less digits than its factorization.

890111012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21288 (or 21286 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 23.

The square root of 890111012 is about 29834.7282876851. The cubic root of 890111012 is about 961.9401633764.

The spelling of 890111012 in words is "eight hundred ninety million, one hundred eleven thousand, twelve".