16013890 has 8 divisors (see below), whose sum is σ = 28825020. Its totient is φ = 6405552.

The previous prime is 16013873. The next prime is 16013891. The reversal of 16013890 is 9831061.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 13476241 + 2537649 = 3671^2 + 1593^2 .

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

It is not an unprimeable number, because it can be changed into a prime (16013891) 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 3 ways as a sum of consecutive naturals, for example, 800685 + ... + 800704.

Almost surely, 2^16013890 is an apocalyptic number.

16013890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16013890 is a deficient number, since it is larger than the sum of its proper divisors (12811130).

16013890 is a wasteful number, since it uses less digits than its factorization.

16013890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1601396.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 16013890 is about 4001.7358733430. The cubic root of 16013890 is about 252.0571068193.

The spelling of 16013890 in words is "sixteen million, thirteen thousand, eight hundred ninety".