1906434 has 12 divisors (see below), whose sum is σ = 4130646. Its totient is φ = 635472.

The previous prime is 1906417. The next prime is 1906439. The reversal of 1906434 is 4346091.

1906434 is a `hidden beast` number, since 19 + 0 + 643 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1550025 + 356409 = 1245^2 + 597^2 .

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1906398 and 1906407.

It is not an unprimeable number, because it can be changed into a prime (1906439) 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, 52939 + ... + 52974.

2^1906434 is an apocalyptic number.

1906434 is an abundant number, since it is smaller than the sum of its proper divisors (2224212).

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

1906434 is a wasteful number, since it uses less digits than its factorization.

1906434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105921 (or 105918 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 1906434 is about 1380.7367598496. The cubic root of 1906434 is about 123.9958808899.

The spelling of 1906434 in words is "one million, nine hundred six thousand, four hundred thirty-four".