1904427 has 48 divisors (see below), whose sum is σ = 3477760. Its totient is φ = 979776.

The previous prime is 1904407. The next prime is 1904429. The reversal of 1904427 is 7244091.

It is a happy number.

It is not a de Polignac number, because 1904427 - 2⁸ = 1904171 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1904427.

It is not an unprimeable number, because it can be changed into a prime (1904429) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 44268 + ... + 44310.

2^1904427 is an apocalyptic number.

1904427 is a deficient number, since it is larger than the sum of its proper divisors (1573333).

1904427 is a wasteful number, since it uses less digits than its factorization.

1904427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112 (or 109 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 1904427 is about 1380.0097825740. The cubic root of 1904427 is about 123.9523533557.

Subtracting from 1904427 its sum of digits (27), we obtain a square (1904400 = 1380²).

The spelling of 1904427 in words is "one million, nine hundred four thousand, four hundred twenty-seven".