19242738 has 32 divisors (see below), whose sum is σ = 43921920. Its totient is φ = 6240240.

The previous prime is 19242733. The next prime is 19242757. The reversal of 19242738 is 83724291.

It is not an unprimeable number, because it can be changed into a prime (19242731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2818 + ... + 6813.

It is an arithmetic number, because the mean of its divisors is an integer number (1372560).

Almost surely, 2^19242738 is an apocalyptic number.

19242738 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

19242738 is an abundant number, since it is smaller than the sum of its proper divisors (24679182).

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

19242738 is a wasteful number, since it uses less digits than its factorization.

19242738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9679 (or 9673 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 19242738 is about 4386.6545339245. The cubic root of 19242738 is about 267.9717149179.

The spelling of 19242738 in words is "nineteen million, two hundred forty-two thousand, seven hundred thirty-eight".