19213434 has 48 divisors (see below), whose sum is σ = 45295848. Its totient is φ = 5861376.

The previous prime is 19213429. The next prime is 19213489. The reversal of 19213434 is 43431291.

19213434 is a `hidden beast` number, since 19 + 213 + 434 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 17766225 + 1447209 = 4215^2 + 1203^2 .

It is a junction number, because it is equal to n+sod(n) for n = 19213398 and 19213407.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10474 + ... + 12170.

Almost surely, 2^19213434 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19213434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22647924).

19213434 is an abundant number, since it is smaller than the sum of its proper divisors (26082414).

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

19213434 is a wasteful number, since it uses less digits than its factorization.

19213434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1759 (or 1756 counting only the distinct ones).

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

The square root of 19213434 is about 4383.3131304984. The cubic root of 19213434 is about 267.8356179884.

The spelling of 19213434 in words is "nineteen million, two hundred thirteen thousand, four hundred thirty-four".