19942680 has 32 divisors (see below), whose sum is σ = 59828400. Its totient is φ = 5318016.

The previous prime is 19942673. The next prime is 19942709. The reversal of 19942680 is 8624991.

It is a congruent number.

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, 82975 + ... + 83214.

Almost surely, 2^19942680 is an apocalyptic number.

19942680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19942680 is an abundant number, since it is smaller than the sum of its proper divisors (39885720).

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

19942680 is a wasteful number, since it uses less digits than its factorization.

19942680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166203 (or 166199 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 19942680 is about 4465.7227858433. The cubic root of 19942680 is about 271.1821961668.

The spelling of 19942680 in words is "nineteen million, nine hundred forty-two thousand, six hundred eighty".