19620814 has 16 divisors (see below), whose sum is σ = 30249648. Its totient is φ = 9539712.

The previous prime is 19620793. The next prime is 19620829. The reversal of 19620814 is 41802691.

It is a happy number.

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, 28644 + ... + 29320.

It is an arithmetic number, because the mean of its divisors is an integer number (1890603).

Almost surely, 2^19620814 is an apocalyptic number.

19620814 is a deficient number, since it is larger than the sum of its proper divisors (10628834).

19620814 is a wasteful number, since it uses less digits than its factorization.

19620814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1059.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 19620814 is about 4429.5388021779. The cubic root of 19620814 is about 269.7153561735.

The spelling of 19620814 in words is "nineteen million, six hundred twenty thousand, eight hundred fourteen".