19973130 has 32 divisors (see below), whose sum is σ = 50756544. Its totient is φ = 5012736.

The previous prime is 19973119. The next prime is 19973137. The reversal of 19973130 is 3137991.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 19973091 and 19973100.

It is not an unprimeable number, because it can be changed into a prime (19973137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19072 + ... + 20091.

It is an arithmetic number, because the mean of its divisors is an integer number (1586142).

Almost surely, 2^19973130 is an apocalyptic number.

19973130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19973130 is an abundant number, since it is smaller than the sum of its proper divisors (30783414).

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

19973130 is a wasteful number, since it uses less digits than its factorization.

19973130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39190.

The product of its (nonzero) digits is 5103, while the sum is 33.

The square root of 19973130 is about 4469.1307879721. The cubic root of 19973130 is about 271.3201465110.

The spelling of 19973130 in words is "nineteen million, nine hundred seventy-three thousand, one hundred thirty".