19973000 has 32 divisors (see below), whose sum is σ = 46739160. Its totient is φ = 7988800.

The previous prime is 19972987. The next prime is 19973029. The reversal of 19973000 is 37991.

It can be written as a sum of positive squares in 4 ways, for example, as 4778596 + 15194404 = 2186^2 + 3898^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8987 + ... + 10986.

Almost surely, 2^19973000 is an apocalyptic number.

19973000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19973000 is an abundant number, since it is smaller than the sum of its proper divisors (26766160).

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

19973000 is a wasteful number, since it uses less digits than its factorization.

19973000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19994 (or 19980 counting only the distinct ones).

The product of its (nonzero) digits is 1701, while the sum is 29.

The square root of 19973000 is about 4469.1162437332. The cubic root of 19973000 is about 271.3195578585.

The spelling of 19973000 in words is "nineteen million, nine hundred seventy-three thousand".