19442678 has 16 divisors (see below), whose sum is σ = 29916864. Its totient is φ = 9472320.

The previous prime is 19442677. The next prime is 19442699. The reversal of 19442678 is 87624491.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19442677) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37058 + ... + 37578.

It is an arithmetic number, because the mean of its divisors is an integer number (1869804).

Almost surely, 2^19442678 is an apocalyptic number.

19442678 is a deficient number, since it is larger than the sum of its proper divisors (10474186).

19442678 is a wasteful number, since it uses less digits than its factorization.

19442678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 967.

The product of its digits is 96768, while the sum is 41.

The square root of 19442678 is about 4409.3852179187. The cubic root of 19442678 is about 268.8966311421.

The spelling of 19442678 in words is "nineteen million, four hundred forty-two thousand, six hundred seventy-eight".