16220674 has 4 divisors (see below), whose sum is σ = 24331014. Its totient is φ = 8110336.

The previous prime is 16220671. The next prime is 16220683. The reversal of 16220674 is 47602261.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 14768649 + 1452025 = 3843^2 + 1205^2 .

It is a super-2 number, since 2×16220674² = 526220530028552, which contains 22 as substring.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (16220671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4055167 + ... + 4055170.

Almost surely, 2^16220674 is an apocalyptic number.

16220674 is a deficient number, since it is larger than the sum of its proper divisors (8110340).

16220674 is an equidigital number, since it uses as much as digits as its factorization.

16220674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8110339.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 16220674 is about 4027.4897889380. The cubic root of 16220674 is about 253.1373904213.

The spelling of 16220674 in words is "sixteen million, two hundred twenty thousand, six hundred seventy-four".