870040 has 16 divisors (see below), whose sum is σ = 1957680. Its totient is φ = 348000.

The previous prime is 870031. The next prime is 870047. The reversal of 870040 is 40078.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (870047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10836 + ... + 10915.

It is an arithmetic number, because the mean of its divisors is an integer number (122355).

2⁸⁷⁰⁰⁴⁰ is an apocalyptic number.

It is an amenable number.

870040 is an abundant number, since it is smaller than the sum of its proper divisors (1087640).

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

870040 is a wasteful number, since it uses less digits than its factorization.

870040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21762 (or 21758 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 870040 is about 932.7593473131. The cubic root of 870040 is about 95.4654901214.

The spelling of 870040 in words is "eight hundred seventy thousand, forty".