1904402 has 8 divisors (see below), whose sum is σ = 2905200. Its totient is φ = 936004.

The previous prime is 1904311. The next prime is 1904407. The reversal of 1904402 is 2044091.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1904407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7952 + ... + 8187.

It is an arithmetic number, because the mean of its divisors is an integer number (363150).

2^1904402 is an apocalyptic number.

1904402 is a deficient number, since it is larger than the sum of its proper divisors (1000798).

1904402 is a wasteful number, since it uses less digits than its factorization.

1904402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16200.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1904402 is about 1380.0007246375. Note that the first 3 decimals coincide. The cubic root of 1904402 is about 123.9518109664.

Adding to 1904402 its reverse (2044091), we get a palindrome (3948493).

The spelling of 1904402 in words is "one million, nine hundred four thousand, four hundred two".