16220660 has 24 divisors (see below), whose sum is σ = 34546176. Its totient is φ = 6396320.

The previous prime is 16220641. The next prime is 16220671. The reversal of 16220660 is 6602261.

It is a plaindrome in base 14.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4292 + ... + 7131.

It is an arithmetic number, because the mean of its divisors is an integer number (1439424).

Almost surely, 2^16220660 is an apocalyptic number.

16220660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16220660 is an abundant number, since it is smaller than the sum of its proper divisors (18325516).

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

16220660 is a wasteful number, since it uses less digits than its factorization.

16220660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11503 (or 11501 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 16220660 is about 4027.4880508823. The cubic root of 16220660 is about 253.1373175940.

The spelling of 16220660 in words is "sixteen million, two hundred twenty thousand, six hundred sixty".