16266220 has 12 divisors (see below), whose sum is σ = 34159104. Its totient is φ = 6506480.

The previous prime is 16266209. The next prime is 16266251. The reversal of 16266220 is 2266261.

It is a plaindrome in base 14.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 406636 + ... + 406675.

It is an arithmetic number, because the mean of its divisors is an integer number (2846592).

Almost surely, 2^16266220 is an apocalyptic number.

16266220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16266220 is an abundant number, since it is smaller than the sum of its proper divisors (17892884).

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

16266220 is a wasteful number, since it uses less digits than its factorization.

16266220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813320 (or 813318 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 16266220 is about 4033.1402157624. The cubic root of 16266220 is about 253.3740970107.

The spelling of 16266220 in words is "sixteen million, two hundred sixty-six thousand, two hundred twenty".