16289390 has 16 divisors (see below), whose sum is σ = 31576608. Its totient is φ = 6014496.

The previous prime is 16289363. The next prime is 16289407. The reversal of 16289390 is 9398261.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62522 + ... + 62781.

It is an arithmetic number, because the mean of its divisors is an integer number (1973538).

Almost surely, 2^16289390 is an apocalyptic number.

16289390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16289390 is a deficient number, since it is larger than the sum of its proper divisors (15287218).

16289390 is a wasteful number, since it uses less digits than its factorization.

16289390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125323.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 16289390 is about 4036.0116451765. The cubic root of 16289390 is about 253.4943440131.

The spelling of 16289390 in words is "sixteen million, two hundred eighty-nine thousand, three hundred ninety".