860436 has 48 divisors (see below), whose sum is σ = 2311680. Its totient is φ = 276480.

The previous prime is 860423. The next prime is 860441. The reversal of 860436 is 634068.

It is a super-2 number, since 2×860436² = 1480700220192, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

860436 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3220 + ... + 3476.

It is an arithmetic number, because the mean of its divisors is an integer number (48160).

2⁸⁶⁰⁴³⁶ 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 860436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1155840).

860436 is an abundant number, since it is smaller than the sum of its proper divisors (1451244).

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

860436 is a wasteful number, since it uses less digits than its factorization.

860436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301 (or 293 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 860436 is about 927.5968952083. The cubic root of 860436 is about 95.1129220467.

It can be divided in two parts, 860 and 436, that added together give a 4-th power (1296 = 6⁴).

The spelling of 860436 in words is "eight hundred sixty thousand, four hundred thirty-six".