1904245 has 16 divisors (see below), whose sum is σ = 2677248. Its totient is φ = 1272960.

The previous prime is 1904233. The next prime is 1904249. The reversal of 1904245 is 5424091.

It is not a de Polignac number, because 1904245 - 2⁷ = 1904117 is a prime.

It is a super-2 number, since 2×1904245² = 7252298040050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1904249) 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, 772 + ... + 2098.

It is an arithmetic number, because the mean of its divisors is an integer number (167328).

2^1904245 is an apocalyptic number.

It is an amenable number.

1904245 is a deficient number, since it is larger than the sum of its proper divisors (773003).

1904245 is a wasteful number, since it uses less digits than its factorization.

1904245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1380.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 1904245 is about 1379.9438394370. The cubic root of 1904245 is about 123.9484046532.

The spelling of 1904245 in words is "one million, nine hundred four thousand, two hundred forty-five".