19770764 has 12 divisors (see below), whose sum is σ = 37260384. Its totient is φ = 9124944.

The previous prime is 19770763. The next prime is 19770767. The reversal of 19770764 is 46707791.

It is not an unprimeable number, because it can be changed into a prime (19770763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190052 + ... + 190155.

It is an arithmetic number, because the mean of its divisors is an integer number (3105032).

Almost surely, 2^19770764 is an apocalyptic number.

It is an amenable number.

19770764 is a deficient number, since it is larger than the sum of its proper divisors (17489620).

19770764 is a wasteful number, since it uses less digits than its factorization.

19770764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380224 (or 380222 counting only the distinct ones).

The product of its (nonzero) digits is 74088, while the sum is 41.

The square root of 19770764 is about 4446.4327274794. The cubic root of 19770764 is about 270.4007036092.

The spelling of 19770764 in words is "nineteen million, seven hundred seventy thousand, seven hundred sixty-four".