1000890396 has 72 divisors (see below), whose sum is σ = 2806876800. Its totient is φ = 298152480.

The previous prime is 1000890391. The next prime is 1000890413. The reversal of 1000890396 is 6930980001.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1000890396.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000890391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1945 + ... + 44783.

It is an arithmetic number, because the mean of its divisors is an integer number (38984400).

Almost surely, 2^1000890396 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 1000890396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1403438400).

1000890396 is an abundant number, since it is smaller than the sum of its proper divisors (1805986404).

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

1000890396 is a wasteful number, since it uses less digits than its factorization.

1000890396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42919 (or 42914 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 1000890396 is about 31636.8518661386. The cubic root of 1000890396 is about 1000.2967106208.

The spelling of 1000890396 in words is "one billion, eight hundred ninety thousand, three hundred ninety-six".