19940192 has 24 divisors (see below), whose sum is σ = 40525632. Its totient is φ = 9648000.

The previous prime is 19940191. The next prime is 19940237. The reversal of 19940192 is 29104991.

It is a super-2 number, since 2×19940192² = 795222513993728, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19940191) 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, 9059 + ... + 11042.

It is an arithmetic number, because the mean of its divisors is an integer number (1688568).

Almost surely, 2^19940192 is an apocalyptic number.

It is an amenable number.

19940192 is an abundant number, since it is smaller than the sum of its proper divisors (20585440).

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

19940192 is a wasteful number, since it uses less digits than its factorization.

19940192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20142 (or 20134 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 35.

The square root of 19940192 is about 4465.4442108261. Note that the first 3 decimals coincide. The cubic root of 19940192 is about 271.1709183552.

The spelling of 19940192 in words is "nineteen million, nine hundred forty thousand, one hundred ninety-two".