16772538 has 8 divisors (see below), whose sum is σ = 33545088. Its totient is φ = 5590844.

The previous prime is 16772533. The next prime is 16772597. The reversal of 16772538 is 83527761.

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

16772538 is an admirable number.

It is a super-2 number, since 2×16772538² = 562636061922888, which contains 22 as substring.

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 16772496 and 16772505.

It is not an unprimeable number, because it can be changed into a prime (16772533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1397706 + ... + 1397717.

It is an arithmetic number, because the mean of its divisors is an integer number (4193136).

Almost surely, 2^16772538 is an apocalyptic number.

16772538 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.

16772538 is a wasteful number, since it uses less digits than its factorization.

16772538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2795428.

The product of its digits is 70560, while the sum is 39.

The square root of 16772538 is about 4095.4289152664. The cubic root of 16772538 is about 255.9762042498.

The spelling of 16772538 in words is "sixteen million, seven hundred seventy-two thousand, five hundred thirty-eight".