785436 has 48 divisors (see below), whose sum is σ = 1979040. Its totient is φ = 241920.

The previous prime is 785431. The next prime is 785459. The reversal of 785436 is 634587.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 785397 and 785406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (785431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12846 + ... + 12906.

It is an arithmetic number, because the mean of its divisors is an integer number (41230).

2⁷⁸⁵⁴³⁶ 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 785436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (989520).

785436 is an abundant number, since it is smaller than the sum of its proper divisors (1193604).

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

785436 is a wasteful number, since it uses less digits than its factorization.

785436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134 (or 132 counting only the distinct ones).

The product of its digits is 20160, while the sum is 33.

The square root of 785436 is about 886.2482722127. The cubic root of 785436 is about 92.2649890084.

It can be divided in two parts, 785 and 436, that added together give a palindrome (1221).

The spelling of 785436 in words is "seven hundred eighty-five thousand, four hundred thirty-six".