19690120 has 16 divisors (see below), whose sum is σ = 44302860. Its totient is φ = 7876032.

The previous prime is 19690117. The next prime is 19690141. The reversal of 19690120 is 2109691.

It can be written as a sum of positive squares in 2 ways, for example, as 19518724 + 171396 = 4418^2 + 414^2 .

It is a super-2 number, since 2×19690120² = 775401651228800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 246087 + ... + 246166.

Almost surely, 2^19690120 is an apocalyptic number.

19690120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19690120 is an abundant number, since it is smaller than the sum of its proper divisors (24612740).

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

19690120 is a wasteful number, since it uses less digits than its factorization.

19690120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492264 (or 492260 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 28.

The square root of 19690120 is about 4437.3550680557. The cubic root of 19690120 is about 270.0325520881.

The spelling of 19690120 in words is "nineteen million, six hundred ninety thousand, one hundred twenty".