16220737 has 16 divisors (see below), whose sum is σ = 19474560. Its totient is φ = 13347072.

The previous prime is 16220713. The next prime is 16220759. The reversal of 16220737 is 73702261.

It is a cyclic number.

It is not a de Polignac number, because 16220737 - 2⁷ = 16220609 is a prime.

It is a super-2 number, since 2×16220737² = 526224617646338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16220137) 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 15 ways as a sum of consecutive naturals, for example, 2268 + ... + 6130.

It is an arithmetic number, because the mean of its divisors is an integer number (1217160).

Almost surely, 2^16220737 is an apocalyptic number.

16220737 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

16220737 is a deficient number, since it is larger than the sum of its proper divisors (3253823).

16220737 is a wasteful number, since it uses less digits than its factorization.

16220737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3912.

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 16220737 is about 4027.4976101793. The cubic root of 16220737 is about 253.1377181437.

Adding to 16220737 its reverse (73702261), we get a palindrome (89922998).

The spelling of 16220737 in words is "sixteen million, two hundred twenty thousand, seven hundred thirty-seven".