16138572 has 24 divisors (see below), whose sum is σ = 37810416. Its totient is φ = 5357568.

The previous prime is 16138561. The next prime is 16138579. The reversal of 16138572 is 27583161.

It is not an unprimeable number, because it can be changed into a prime (16138579) 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 7 ways as a sum of consecutive naturals, for example, 468 + ... + 5700.

It is an arithmetic number, because the mean of its divisors is an integer number (1575434).

Almost surely, 2^16138572 is an apocalyptic number.

16138572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16138572 is an abundant number, since it is smaller than the sum of its proper divisors (21671844).

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

16138572 is a wasteful number, since it uses less digits than its factorization.

16138572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5497 (or 5495 counting only the distinct ones).

The product of its digits is 10080, while the sum is 33.

The square root of 16138572 is about 4017.2841572386. The cubic root of 16138572 is about 252.7095773323.

The spelling of 16138572 in words is "sixteen million, one hundred thirty-eight thousand, five hundred seventy-two".