19434830 has 32 divisors (see below), whose sum is σ = 36661248. Its totient is φ = 7408800.

The previous prime is 19434827. The next prime is 19434851. The reversal of 19434830 is 3843491.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 21569 + ... + 22451.

It is an arithmetic number, because the mean of its divisors is an integer number (1145664).

Almost surely, 2^19434830 is an apocalyptic number.

19434830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19434830 is a deficient number, since it is larger than the sum of its proper divisors (17226418).

19434830 is a wasteful number, since it uses less digits than its factorization.

19434830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 992.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 19434830 is about 4408.4952081181. The cubic root of 19434830 is about 268.8604464017.

The spelling of 19434830 in words is "nineteen million, four hundred thirty-four thousand, eight hundred thirty".