813850 has 24 divisors (see below), whose sum is σ = 1554588. Its totient is φ = 316800.

The previous prime is 813847. The next prime is 813863. The reversal of 813850 is 58318.

813850 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 152881 + 660969 = 391^2 + 813^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1852 + ... + 2248.

2⁸¹³⁸⁵⁰ is an apocalyptic number.

813850 is a deficient number, since it is larger than the sum of its proper divisors (740738).

813850 is a wasteful number, since it uses less digits than its factorization.

813850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450 (or 445 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 813850 is about 902.1363533302. The cubic root of 813850 is about 93.3644312473.

The spelling of 813850 in words is "eight hundred thirteen thousand, eight hundred fifty".