16220735 has 4 divisors (see below), whose sum is σ = 19464888. Its totient is φ = 12976584.

The previous prime is 16220713. The next prime is 16220759. The reversal of 16220735 is 53702261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 53702261 = 31 ⋅1732331.

It is a cyclic number.

It is not a de Polignac number, because 16220735 - 2⁶ = 16220671 is a prime.

It is a super-2 number, since 2×16220735² = 526224487880450, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a zygodrome in base 12.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1622069 + ... + 1622078.

It is an arithmetic number, because the mean of its divisors is an integer number (4866222).

Almost surely, 2^16220735 is an apocalyptic number.

16220735 is a deficient number, since it is larger than the sum of its proper divisors (3244153).

16220735 is an equidigital number, since it uses as much as digits as its factorization.

16220735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3244152.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 16220735 is about 4027.4973618862. The cubic root of 16220735 is about 253.1377077398.

Adding to 16220735 its reverse (53702261), we get a palindrome (69922996).

The spelling of 16220735 in words is "sixteen million, two hundred twenty thousand, seven hundred thirty-five".