16220488 has 8 divisors (see below), whose sum is σ = 30413430. Its totient is φ = 8110240.

The previous prime is 16220459. The next prime is 16220489. The reversal of 16220488 is 88402261.

It can be written as a sum of positive squares in only one way, i.e., 14152644 + 2067844 = 3762^2 + 1438^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (16220489) 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 as a sum of consecutive naturals, namely, 1013773 + ... + 1013788.

Almost surely, 2^16220488 is an apocalyptic number.

It is an amenable number.

16220488 is a deficient number, since it is larger than the sum of its proper divisors (14192942).

16220488 is a wasteful number, since it uses less digits than its factorization.

16220488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2027567 (or 2027563 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 16220488 is about 4027.4666975656. The cubic root of 16220488 is about 253.1364228549.

The spelling of 16220488 in words is "sixteen million, two hundred twenty thousand, four hundred eighty-eight".