19934690 has 16 divisors (see below), whose sum is σ = 35944128. Its totient is φ = 7960176.

The previous prime is 19934689. The next prime is 19934713. The reversal of 19934690 is 9643991.

It is a super-2 number, since 2×19934690² = 794783730792200, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6089 + ... + 8771.

It is an arithmetic number, because the mean of its divisors is an integer number (2246508).

Almost surely, 2^19934690 is an apocalyptic number.

19934690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19934690 is a deficient number, since it is larger than the sum of its proper divisors (16009438).

19934690 is a wasteful number, since it uses less digits than its factorization.

19934690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3433.

The product of its (nonzero) digits is 52488, while the sum is 41.

The square root of 19934690 is about 4464.8281041939. The cubic root of 19934690 is about 271.1459751042.

The spelling of 19934690 in words is "nineteen million, nine hundred thirty-four thousand, six hundred ninety".