16103890 has 24 divisors (see below), whose sum is σ = 31864140. Its totient is φ = 5855520.

The previous prime is 16103881. The next prime is 16103929. The reversal of 16103890 is 9830161.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 13417569 + 2686321 = 3663^2 + 1639^2 .

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5445 + ... + 7864.

Almost surely, 2^16103890 is an apocalyptic number.

16103890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16103890 is a deficient number, since it is larger than the sum of its proper divisors (15760250).

16103890 is a wasteful number, since it uses less digits than its factorization.

16103890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13338 (or 13327 counting only the distinct ones).

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

The square root of 16103890 is about 4012.9652378260. The cubic root of 16103890 is about 252.5284221184.

The spelling of 16103890 in words is "sixteen million, one hundred three thousand, eight hundred ninety".