16331290 has 8 divisors (see below), whose sum is σ = 29396340. Its totient is φ = 6532512.

The previous prime is 16331267. The next prime is 16331291. The reversal of 16331290 is 9213361.

16331290 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 16152361 + 178929 = 4019^2 + 423^2 .

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

It is a super-2 number, since 2×16331290² = 533422066128200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16331291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 816555 + ... + 816574.

Almost surely, 2^16331290 is an apocalyptic number.

16331290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16331290 is a deficient number, since it is larger than the sum of its proper divisors (13065050).

16331290 is a wasteful number, since it uses less digits than its factorization.

16331290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1633136.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 16331290 is about 4041.1990794812. The cubic root of 16331290 is about 253.7115062091.

The spelling of 16331290 in words is "sixteen million, three hundred thirty-one thousand, two hundred ninety".