16022778 has 8 divisors (see below), whose sum is σ = 32045568. Its totient is φ = 5340924.

The previous prime is 16022767. The next prime is 16022779. The reversal of 16022778 is 87722061.

It is a sphenic number, since it is the product of 3 distinct primes.

16022778 is an admirable number.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (16022779) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1335226 + ... + 1335237.

It is an arithmetic number, because the mean of its divisors is an integer number (4005696).

Almost surely, 2^16022778 is an apocalyptic number.

16022778 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

16022778 is a wasteful number, since it uses less digits than its factorization.

16022778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2670468.

The product of its (nonzero) digits is 9408, while the sum is 33.

The square root of 16022778 is about 4002.8462373666. The cubic root of 16022778 is about 252.1037302865.

The spelling of 16022778 in words is "sixteen million, twenty-two thousand, seven hundred seventy-eight".