16220464 has 20 divisors (see below), whose sum is σ = 33845056. Its totient is φ = 7486272.

The previous prime is 16220459. The next prime is 16220489. The reversal of 16220464 is 46402261.

It is a plaindrome in base 14.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 38784 + ... + 39199.

Almost surely, 2^16220464 is an apocalyptic number.

It is an amenable number.

16220464 is an abundant number, since it is smaller than the sum of its proper divisors (17624592).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16220464 is a wasteful number, since it uses less digits than its factorization.

16220464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78004 (or 77998 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 16220464 is about 4027.4637180240. The cubic root of 16220464 is about 253.1362980071.

The spelling of 16220464 in words is "sixteen million, two hundred twenty thousand, four hundred sixty-four".