16220938 has 4 divisors (see below), whose sum is σ = 24331410. Its totient is φ = 8110468.

The previous prime is 16220923. The next prime is 16220951. The reversal of 16220938 is 83902261.

16220938 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83902261 = 829 ⋅101209.

It can be written as a sum of positive squares in only one way, i.e., 10712529 + 5508409 = 3273^2 + 2347^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4055233 + ... + 4055236.

Almost surely, 2^16220938 is an apocalyptic number.

16220938 is a deficient number, since it is larger than the sum of its proper divisors (8110472).

16220938 is an equidigital number, since it uses as much as digits as its factorization.

16220938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8110471.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 16220938 is about 4027.5225635619. The cubic root of 16220938 is about 253.1387637285.

The spelling of 16220938 in words is "sixteen million, two hundred twenty thousand, nine hundred thirty-eight".