810029850 has 144 divisors (see below), whose sum is σ = 2424184128. Its totient is φ = 175322880.

The previous prime is 810029849. The next prime is 810029879. The reversal of 810029850 is 58920018.

It is a happy number.

It is a super-2 number, since 2×810029850² = 1312296715782045000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 377982 + ... + 380118.

It is an arithmetic number, because the mean of its divisors is an integer number (16834612).

Almost surely, 2^810029850 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 810029850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1212092064).

810029850 is an abundant number, since it is smaller than the sum of its proper divisors (1614154278).

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

810029850 is a wasteful number, since it uses less digits than its factorization.

810029850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2197 (or 2173 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 33.

The square root of 810029850 is about 28461.0233477294. The cubic root of 810029850 is about 932.1812023727.

Adding to 810029850 its reverse (58920018), we get a palindrome (868949868).

It can be divided in two parts, 8100 and 29850, that added together give a triangular number (37950 = T₂₇₅).

The spelling of 810029850 in words is "eight hundred ten million, twenty-nine thousand, eight hundred fifty".