16797778 has 16 divisors (see below), whose sum is σ = 26484480. Its totient is φ = 7980336.

The previous prime is 16797763. The next prime is 16797779. The reversal of 16797778 is 87779761.

It is not an unprimeable number, because it can be changed into a prime (16797779) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 543 + ... + 5821.

It is an arithmetic number, because the mean of its divisors is an integer number (1655280).

Almost surely, 2^16797778 is an apocalyptic number.

16797778 is a deficient number, since it is larger than the sum of its proper divisors (9686702).

16797778 is a wasteful number, since it uses less digits than its factorization.

16797778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5361.

The product of its digits is 1037232, while the sum is 52.

The square root of 16797778 is about 4098.5092411754. The cubic root of 16797778 is about 256.1045410437.

The spelling of 16797778 in words is "sixteen million, seven hundred ninety-seven thousand, seven hundred seventy-eight".