19970072 has 16 divisors (see below), whose sum is σ = 39072240. Its totient is φ = 9550816.

The previous prime is 19970063. The next prime is 19970077. The reversal of 19970072 is 27007991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19970077) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54083 + ... + 54450.

It is an arithmetic number, because the mean of its divisors is an integer number (2442015).

Almost surely, 2^19970072 is an apocalyptic number.

It is an amenable number.

19970072 is a deficient number, since it is larger than the sum of its proper divisors (19102168).

19970072 is a wasteful number, since it uses less digits than its factorization.

19970072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108562 (or 108558 counting only the distinct ones).

The product of its (nonzero) digits is 7938, while the sum is 35.

The square root of 19970072 is about 4468.7886501825. The cubic root of 19970072 is about 271.3062989175.

The spelling of 19970072 in words is "nineteen million, nine hundred seventy thousand, seventy-two".