19434930 has 64 divisors (see below), whose sum is σ = 48988800. Its totient is φ = 4928000.

The previous prime is 19434913. The next prime is 19434949. The reversal of 19434930 is 3943491.

It is a junction number, because it is equal to n+sod(n) for n = 19434891 and 19434900.

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 31 ways as a sum of consecutive naturals, for example, 77305 + ... + 77555.

It is an arithmetic number, because the mean of its divisors is an integer number (765450).

Almost surely, 2^19434930 is an apocalyptic number.

19434930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 19434930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24494400).

19434930 is an abundant number, since it is smaller than the sum of its proper divisors (29553870).

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

19434930 is a wasteful number, since it uses less digits than its factorization.

19434930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379.

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 19434930 is about 4408.5065498420. The cubic root of 19434930 is about 268.8609075326.

The spelling of 19434930 in words is "nineteen million, four hundred thirty-four thousand, nine hundred thirty".