870803838 has 64 divisors (see below), whose sum is σ = 1991485440. Its totient is φ = 281880000.

The previous prime is 870803837. The next prime is 870803849. The reversal of 870803838 is 838308078.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 870803793 and 870803802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (870803831) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 554931 + ... + 556497.

It is an arithmetic number, because the mean of its divisors is an integer number (31116960).

Almost surely, 2^870803838 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 870803838, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (995742720).

870803838 is an abundant number, since it is smaller than the sum of its proper divisors (1120681602).

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

870803838 is a wasteful number, since it uses less digits than its factorization.

870803838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1870 (or 1864 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 45.

The square root of 870803838 is about 29509.3855917062. The cubic root of 870803838 is about 954.9341942723.

The spelling of 870803838 in words is "eight hundred seventy million, eight hundred three thousand, eight hundred thirty-eight".