19739072 has 14 divisors (see below), whose sum is σ = 39169848. Its totient is φ = 9869504.

The previous prime is 19739063. The next prime is 19739077. The reversal of 19739072 is 27093791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19739077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 154148 + ... + 154275.

Almost surely, 2^19739072 is an apocalyptic number.

It is an amenable number.

19739072 is a deficient number, since it is larger than the sum of its proper divisors (19430776).

19739072 is an equidigital number, since it uses as much as digits as its factorization.

19739072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308435 (or 308425 counting only the distinct ones).

The product of its (nonzero) digits is 23814, while the sum is 38.

The square root of 19739072 is about 4442.8675424775. The cubic root of 19739072 is about 270.2561446686.

The spelling of 19739072 in words is "nineteen million, seven hundred thirty-nine thousand, seventy-two".