19772964 has 48 divisors (see below), whose sum is σ = 51555840. Its totient is φ = 6553440.

The previous prime is 19772959. The next prime is 19772971. The reversal of 19772964 is 46927791.

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, 23674 + ... + 24494.

It is an arithmetic number, because the mean of its divisors is an integer number (1074080).

Almost surely, 2^19772964 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19772964, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25777920).

19772964 is an abundant number, since it is smaller than the sum of its proper divisors (31782876).

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

19772964 is a wasteful number, since it uses less digits than its factorization.

19772964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1057 (or 1049 counting only the distinct ones).

The product of its digits is 190512, while the sum is 45.

The square root of 19772964 is about 4446.6801099247. The cubic root of 19772964 is about 270.4107328875.

It can be divided in two parts, 19772 and 964, that added together give a 4-th power (20736 = 12⁴).

The spelling of 19772964 in words is "nineteen million, seven hundred seventy-two thousand, nine hundred sixty-four".