1904234 has 4 divisors (see below), whose sum is σ = 2856354. Its totient is φ = 952116.

The previous prime is 1904233. The next prime is 1904249. The reversal of 1904234 is 4324091.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4324091 = 421 ⋅10271.

It can be written as a sum of positive squares in only one way, i.e., 1651225 + 253009 = 1285^2 + 503^2 .

It is a super-2 number, since 2×1904234² = 7252214253512, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1904233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 476057 + ... + 476060.

2^1904234 is an apocalyptic number.

1904234 is a deficient number, since it is larger than the sum of its proper divisors (952120).

1904234 is an equidigital number, since it uses as much as digits as its factorization.

1904234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 952119.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 1904234 is about 1379.9398537618. The cubic root of 1904234 is about 123.9481659873.

The spelling of 1904234 in words is "one million, nine hundred four thousand, two hundred thirty-four".