19742764 has 6 divisors (see below), whose sum is σ = 34549844. Its totient is φ = 9871380.

The previous prime is 19742761. The next prime is 19742791. The reversal of 19742764 is 46724791.

It is not an unprimeable number, because it can be changed into a prime (19742761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2467842 + ... + 2467849.

Almost surely, 2^19742764 is an apocalyptic number.

It is an amenable number.

19742764 is a deficient number, since it is larger than the sum of its proper divisors (14807080).

19742764 is a wasteful number, since it uses less digits than its factorization.

19742764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4935695 (or 4935693 counting only the distinct ones).

The product of its digits is 84672, while the sum is 40.

The square root of 19742764 is about 4443.2830204703. The cubic root of 19742764 is about 270.2729932061.

The spelling of 19742764 in words is "nineteen million, seven hundred forty-two thousand, seven hundred sixty-four".