16766220 has 48 divisors (see below), whose sum is σ = 47190528. Its totient is φ = 4447680.

The previous prime is 16766219. The next prime is 16766231. The reversal of 16766220 is 2266761.

It is a super-2 number, since 2×16766220² = 562212266176800, which contains 22 as substring.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13005 + ... + 14235.

It is an arithmetic number, because the mean of its divisors is an integer number (983136).

Almost surely, 2^16766220 is an apocalyptic number.

16766220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16766220 is an abundant number, since it is smaller than the sum of its proper divisors (30424308).

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

16766220 is a wasteful number, since it uses less digits than its factorization.

16766220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1470 (or 1468 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 16766220 is about 4094.6574948340. The cubic root of 16766220 is about 255.9440592286.

The spelling of 16766220 in words is "sixteen million, seven hundred sixty-six thousand, two hundred twenty".