870250040 has 64 divisors (see below), whose sum is σ = 2139372000. Its totient is φ = 315965440.

The previous prime is 870250033. The next prime is 870250079. The reversal of 870250040 is 40052078.

It is a junction number, because it is equal to n+sod(n) for n = 870249991 and 870250009.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 407696 + ... + 409824.

Almost surely, 2^870250040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 870250040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1069686000).

870250040 is an abundant number, since it is smaller than the sum of its proper divisors (1269121960).

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

870250040 is a wasteful number, since it uses less digits than its factorization.

870250040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3080 (or 3076 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 870250040 is about 29500.0006779661. Note that the first 3 decimals coincide. The cubic root of 870250040 is about 954.7317174454.

The spelling of 870250040 in words is "eight hundred seventy million, two hundred fifty thousand, forty".