16158772 has 48 divisors (see below), whose sum is σ = 34715520. Its totient is φ = 6423552.

The previous prime is 16158767. The next prime is 16158773. The reversal of 16158772 is 27785161.

It is a super-2 number, since 2×16158772² = 522211825095968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16158773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39304 + ... + 39712.

It is an arithmetic number, because the mean of its divisors is an integer number (723240).

Almost surely, 2^16158772 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 16158772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17357760).

16158772 is an abundant number, since it is smaller than the sum of its proper divisors (18556748).

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

16158772 is a wasteful number, since it uses less digits than its factorization.

16158772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520 (or 518 counting only the distinct ones).

The product of its digits is 23520, while the sum is 37.

The square root of 16158772 is about 4019.7975073379. The cubic root of 16158772 is about 252.8149688367.

The spelling of 16158772 in words is "sixteen million, one hundred fifty-eight thousand, seven hundred seventy-two".