16220532 has 12 divisors (see below), whose sum is σ = 37847936. Its totient is φ = 5406840.

The previous prime is 16220521. The next prime is 16220537. The reversal of 16220532 is 23502261.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 16220499 and 16220508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16220537) by changing a digit.

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, 675844 + ... + 675867.

Almost surely, 2^16220532 is an apocalyptic number.

16220532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16220532 is an abundant number, since it is smaller than the sum of its proper divisors (21627404).

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

16220532 is a wasteful number, since it uses less digits than its factorization.

16220532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1351718 (or 1351716 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 16220532 is about 4027.4721600528. The cubic root of 16220532 is about 253.1366517423.

Adding to 16220532 its reverse (23502261), we get a palindrome (39722793).

The spelling of 16220532 in words is "sixteen million, two hundred twenty thousand, five hundred thirty-two".