890589840 has 160 divisors (see below), whose sum is σ = 3222650880. Its totient is φ = 199214592.

The previous prime is 890589839. The next prime is 890589857. The reversal of 890589840 is 48985098.

It is a super-2 number, since 2×890589840² = 1586300526222451200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 73321 + ... + 84599.

It is an arithmetic number, because the mean of its divisors is an integer number (20141568).

Almost surely, 2^890589840 is an apocalyptic number.

890589840 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 890589840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1611325440).

890589840 is an abundant number, since it is smaller than the sum of its proper divisors (2332061040).

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

890589840 is a wasteful number, since it uses less digits than its factorization.

890589840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11349 (or 11343 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 51.

The square root of 890589840 is about 29842.7518838327. The cubic root of 890589840 is about 962.1126217590.

The spelling of 890589840 in words is "eight hundred ninety million, five hundred eighty-nine thousand, eight hundred forty".