19697130 has 24 divisors (see below), whose sum is σ = 51212772. Its totient is φ = 5252544.

The previous prime is 19697123. The next prime is 19697137. The reversal of 19697130 is 3179691.

It is an interprime number because it is at equal distance from previous prime (19697123) and next prime (19697137).

It can be written as a sum of positive squares in 2 ways, for example, as 19368801 + 328329 = 4401^2 + 573^2 .

It is not an unprimeable number, because it can be changed into a prime (19697137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 109339 + ... + 109518.

Almost surely, 2^19697130 is an apocalyptic number.

19697130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19697130 is an abundant number, since it is smaller than the sum of its proper divisors (31515642).

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

19697130 is a wasteful number, since it uses less digits than its factorization.

19697130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218870 (or 218867 counting only the distinct ones).

The product of its (nonzero) digits is 10206, while the sum is 36.

The square root of 19697130 is about 4438.1448827185. The cubic root of 19697130 is about 270.0645935992.

The spelling of 19697130 in words is "nineteen million, six hundred ninety-seven thousand, one hundred thirty".