16220558 has 8 divisors (see below), whose sum is σ = 24558552. Its totient is φ = 8034376.

The previous prime is 16220549. The next prime is 16220563. The reversal of 16220558 is 85502261.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×16220558³ (a number of 23 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16220558.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37685 + ... + 38112.

It is an arithmetic number, because the mean of its divisors is an integer number (3069819).

Almost surely, 2^16220558 is an apocalyptic number.

16220558 is a deficient number, since it is larger than the sum of its proper divisors (8337994).

16220558 is a wasteful number, since it uses less digits than its factorization.

16220558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75906.

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 16220558 is about 4027.4753878826. The cubic root of 16220558 is about 253.1367869937.

The spelling of 16220558 in words is "sixteen million, two hundred twenty thousand, five hundred fifty-eight".