890631860 has 48 divisors (see below), whose sum is σ = 1934876160. Its totient is φ = 344008320.

The previous prime is 890631857. The next prime is 890631877. The reversal of 890631860 is 68136098.

It is a happy number.

It is a super-2 number, since 2×890631860² = 1586450220094119200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 344051 + ... + 346629.

It is an arithmetic number, because the mean of its divisors is an integer number (40309920).

Almost surely, 2^890631860 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 890631860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (967438080).

890631860 is an abundant number, since it is smaller than the sum of its proper divisors (1044244300).

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

890631860 is a wasteful number, since it uses less digits than its factorization.

890631860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3176 (or 3174 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 890631860 is about 29843.4558990744. The cubic root of 890631860 is about 962.1277530555.

The spelling of 890631860 in words is "eight hundred ninety million, six hundred thirty-one thousand, eight hundred sixty".