1860404 has 48 divisors (see below), whose sum is σ = 4233600. Its totient is φ = 694656.

The previous prime is 1860377. The next prime is 1860407. The reversal of 1860404 is 4040681.

It is a happy number.

It is a super-2 number, since 2×1860404² = 6922206086432, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1860404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1860407) 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, 6782 + ... + 7050.

It is an arithmetic number, because the mean of its divisors is an integer number (88200).

2^1860404 is an apocalyptic number.

1860404 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1860404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2116800).

1860404 is an abundant number, since it is smaller than the sum of its proper divisors (2373196).

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

1860404 is a wasteful number, since it uses less digits than its factorization.

1860404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312 (or 310 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 1860404 is about 1363.9662752429. The cubic root of 1860404 is about 122.9897979949.

The spelling of 1860404 in words is "one million, eight hundred sixty thousand, four hundred four".