19426914 has 48 divisors (see below), whose sum is σ = 46106424. Its totient is φ = 5875200.

The previous prime is 19426889. The next prime is 19426921. The reversal of 19426914 is 41962491.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4473225 + 14953689 = 2115^2 + 3867^2 .

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 23 ways as a sum of consecutive naturals, for example, 13594 + ... + 14954.

Almost surely, 2^19426914 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19426914, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23053212).

19426914 is an abundant number, since it is smaller than the sum of its proper divisors (26679510).

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

19426914 is a wasteful number, since it uses less digits than its factorization.

19426914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1443 (or 1440 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 19426914 is about 4407.5973046548. The cubic root of 19426914 is about 268.8239382646.

The spelling of 19426914 in words is "nineteen million, four hundred twenty-six thousand, nine hundred fourteen".