19204434 has 12 divisors (see below), whose sum is σ = 41609646. Its totient is φ = 6401472.

The previous prime is 19204433. The next prime is 19204439. The reversal of 19204434 is 43440291.

It can be written as a sum of positive squares in only one way, i.e., 18896409 + 308025 = 4347^2 + 555^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 19204398 and 19204407.

It is not an unprimeable number, because it can be changed into a prime (19204433) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 533439 + ... + 533474.

Almost surely, 2^19204434 is an apocalyptic number.

19204434 is an abundant number, since it is smaller than the sum of its proper divisors (22405212).

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

19204434 is a wasteful number, since it uses less digits than its factorization.

19204434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1066921 (or 1066918 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 19204434 is about 4382.2863895460. The cubic root of 19204434 is about 267.7937914026.

The spelling of 19204434 in words is "nineteen million, two hundred four thousand, four hundred thirty-four".