16858372 has 12 divisors (see below), whose sum is σ = 29538460. Its totient is φ = 8418816.

The previous prime is 16858351. The next prime is 16858381. The reversal of 16858372 is 27385861.

It can be written as a sum of positive squares in 2 ways, for example, as 10982596 + 5875776 = 3314^2 + 2424^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1948 + ... + 6124.

Almost surely, 2^16858372 is an apocalyptic number.

It is an amenable number.

16858372 is a deficient number, since it is larger than the sum of its proper divisors (12680088).

16858372 is a wasteful number, since it uses less digits than its factorization.

16858372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5190 (or 5188 counting only the distinct ones).

The product of its digits is 80640, while the sum is 40.

The square root of 16858372 is about 4105.8947867669. The cubic root of 16858372 is about 256.4121169667.

The spelling of 16858372 in words is "sixteen million, eight hundred fifty-eight thousand, three hundred seventy-two".