19338772 has 6 divisors (see below), whose sum is σ = 33842858. Its totient is φ = 9669384.

The previous prime is 19338763. The next prime is 19338779. The reversal of 19338772 is 27783391.

It can be written as a sum of positive squares in only one way, i.e., 14167696 + 5171076 = 3764^2 + 2274^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19338779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2417343 + ... + 2417350.

Almost surely, 2^19338772 is an apocalyptic number.

It is an amenable number.

19338772 is a deficient number, since it is larger than the sum of its proper divisors (14504086).

19338772 is a wasteful number, since it uses less digits than its factorization.

19338772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4834697 (or 4834695 counting only the distinct ones).

The product of its digits is 63504, while the sum is 40.

The square root of 19338772 is about 4397.5870656532. The cubic root of 19338772 is about 268.4167607912.

The spelling of 19338772 in words is "nineteen million, three hundred thirty-eight thousand, seven hundred seventy-two".