16780772 has 12 divisors (see below), whose sum is σ = 29696940. Its totient is φ = 8295936.

The previous prime is 16780727. The next prime is 16780787. The reversal of 16780772 is 27708761.

It can be written as a sum of positive squares in 2 ways, for example, as 972196 + 15808576 = 986^2 + 3976^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23213 + ... + 23924.

It is an arithmetic number, because the mean of its divisors is an integer number (2474745).

Almost surely, 2^16780772 is an apocalyptic number.

It is an amenable number.

16780772 is a deficient number, since it is larger than the sum of its proper divisors (12916168).

16780772 is a wasteful number, since it uses less digits than its factorization.

16780772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47230 (or 47228 counting only the distinct ones).

The product of its (nonzero) digits is 32928, while the sum is 38.

The square root of 16780772 is about 4096.4340590323. The cubic root of 16780772 is about 256.0180854736.

The spelling of 16780772 in words is "sixteen million, seven hundred eighty thousand, seven hundred seventy-two".