19768894 has 32 divisors (see below), whose sum is σ = 32076000. Its totient is φ = 9120384.

The previous prime is 19768871. The next prime is 19768907. The reversal of 19768894 is 49886791.

It is a happy number.

Its product of digits (870912) is a multiple of the sum of its prime divisors (252).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 181312 + ... + 181420.

It is an arithmetic number, because the mean of its divisors is an integer number (1002375).

Almost surely, 2^19768894 is an apocalyptic number.

19768894 is a deficient number, since it is larger than the sum of its proper divisors (12307106).

19768894 is a wasteful number, since it uses less digits than its factorization.

19768894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252.

The product of its digits is 870912, while the sum is 52.

The square root of 19768894 is about 4446.2224415789. Note that the first 3 decimals coincide. The cubic root of 19768894 is about 270.3921781376.

The spelling of 19768894 in words is "nineteen million, seven hundred sixty-eight thousand, eight hundred ninety-four".