19208742 has 32 divisors (see below), whose sum is σ = 46490112. Its totient is φ = 5165184.

The previous prime is 19208723. The next prime is 19208767. The reversal of 19208742 is 24780291.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12738 + ... + 14165.

It is an arithmetic number, because the mean of its divisors is an integer number (1452816).

Almost surely, 2^19208742 is an apocalyptic number.

19208742 is an abundant number, since it is smaller than the sum of its proper divisors (27281370).

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

19208742 is a wasteful number, since it uses less digits than its factorization.

19208742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26932.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 19208742 is about 4382.7778862270. Note that the first 3 decimals coincide. The cubic root of 19208742 is about 267.8138140251.

The spelling of 19208742 in words is "nineteen million, two hundred eight thousand, seven hundred forty-two".