890339840 has 160 divisors (see below), whose sum is σ = 2375847936. Its totient is φ = 317767680.

The previous prime is 890339839. The next prime is 890339869. The reversal of 890339840 is 48933098.

It is a tau number, because it is divible by the number of its divisors (160).

It is a junction number, because it is equal to n+sod(n) for n = 890339791 and 890339800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1031249 + ... + 1032111.

Almost surely, 2^890339840 is an apocalyptic number.

890339840 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 890339840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1187923968).

890339840 is an abundant number, since it is smaller than the sum of its proper divisors (1485508096).

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

890339840 is a wasteful number, since it uses less digits than its factorization.

890339840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 930 (or 914 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 890339840 is about 29838.5629680787. The cubic root of 890339840 is about 962.0225875463.

The spelling of 890339840 in words is "eight hundred ninety million, three hundred thirty-nine thousand, eight hundred forty".