19429426 has 8 divisors (see below), whose sum is σ = 29162880. Its totient is φ = 9708468.

The previous prime is 19429409. The next prime is 19429427. The reversal of 19429426 is 62492491.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (19429427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4195 + ... + 7513.

It is an arithmetic number, because the mean of its divisors is an integer number (3645360).

Almost surely, 2^19429426 is an apocalyptic number.

19429426 is a deficient number, since it is larger than the sum of its proper divisors (9733454).

19429426 is a wasteful number, since it uses less digits than its factorization.

19429426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6248.

The product of its digits is 31104, while the sum is 37.

The square root of 19429426 is about 4407.8822579556. The cubic root of 19429426 is about 268.8355245383.

The spelling of 19429426 in words is "nineteen million, four hundred twenty-nine thousand, four hundred twenty-six".