1862406 has 64 divisors (see below), whose sum is σ = 5107200. Its totient is φ = 489888.

The previous prime is 1862383. The next prime is 1862407. The reversal of 1862406 is 6042681.

It is a super-2 number, since 2×1862406² = 6937112217672, which contains 22 as substring.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1862406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1862407) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4725 + ... + 5103.

It is an arithmetic number, because the mean of its divisors is an integer number (79800).

2^1862406 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1862406, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2553600).

1862406 is an abundant number, since it is smaller than the sum of its proper divisors (3244794).

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

1862406 is a wasteful number, since it uses less digits than its factorization.

1862406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410 (or 404 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 1862406 is about 1364.6999670257. The cubic root of 1862406 is about 123.0338990444.

The spelling of 1862406 in words is "one million, eight hundred sixty-two thousand, four hundred six".