1904408 has 64 divisors (see below), whose sum is σ = 4406400. Its totient is φ = 760320.

The previous prime is 1904407. The next prime is 1904429. The reversal of 1904408 is 8044091.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 28391 + ... + 28457.

It is an arithmetic number, because the mean of its divisors is an integer number (68850).

2^1904408 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 1904408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2203200).

1904408 is an abundant number, since it is smaller than the sum of its proper divisors (2501992).

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

1904408 is a wasteful number, since it uses less digits than its factorization.

1904408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120 (or 116 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 1904408 is about 1380.0028985477. The cubic root of 1904408 is about 123.9519411403.

Adding to 1904408 its reverse (8044091), we get a palindrome (9948499).

It can be divided in two parts, 1 and 904408, that added together give a palindrome (904409).

The spelling of 1904408 in words is "one million, nine hundred four thousand, four hundred eight".