890240 has 64 divisors (see below), whose sum is σ = 2313360. Its totient is φ = 325632.

The previous prime is 890237. The next prime is 890287. The reversal of 890240 is 42098.

890240 = T₃₃₇ + T₃₃₈ + ... + T₃₅₁.

It is a tau number, because it is divible by the number of its divisors (64).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8267 + ... + 8373.

2⁸⁹⁰²⁴⁰ is an apocalyptic number.

890240 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 890240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1156680).

890240 is an abundant number, since it is smaller than the sum of its proper divisors (1423120).

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

890240 is a wasteful number, since it uses less digits than its factorization.

890240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139 (or 127 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 890240 is about 943.5253043772. The cubic root of 890240 is about 96.1986626774.

The spelling of 890240 in words is "eight hundred ninety thousand, two hundred forty".