890040 has 32 divisors (see below), whose sum is σ = 2670480. Its totient is φ = 237312.

The previous prime is 890027. The next prime is 890053. The reversal of 890040 is 40098.

890040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (890027) and next prime (890053).

It is a junction number, because it is equal to n+sod(n) for n = 889989 and 890016.

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, 3589 + ... + 3828.

2⁸⁹⁰⁰⁴⁰ is an apocalyptic number.

It is an amenable number.

890040 is an abundant number, since it is smaller than the sum of its proper divisors (1780440).

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

890040 is a wasteful number, since it uses less digits than its factorization.

890040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7431 (or 7427 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 890040 is about 943.4193129251. The cubic root of 890040 is about 96.1914581881.

The spelling of 890040 in words is "eight hundred ninety thousand, forty".