1865226 has 32 divisors (see below), whose sum is σ = 4147200. Its totient is φ = 554480.

The previous prime is 1865221. The next prime is 1865233. The reversal of 1865226 is 6225681.

1865226 = 184² + 185² + ... + 227².

1865226 is nontrivially palindromic in base 9.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1865193 and 1865202.

It is not an unprimeable number, because it can be changed into a prime (1865221) 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, 3655 + ... + 4133.

It is an arithmetic number, because the mean of its divisors is an integer number (129600).

2^1865226 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1865226, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2073600).

1865226 is an abundant number, since it is smaller than the sum of its proper divisors (2281974).

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

1865226 is a wasteful number, since it uses less digits than its factorization.

1865226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554.

The product of its digits is 5760, while the sum is 30.

The square root of 1865226 is about 1365.7327703471. The cubic root of 1865226 is about 123.0959658235.

The spelling of 1865226 in words is "one million, eight hundred sixty-five thousand, two hundred twenty-six".