16674220 has 12 divisors (see below), whose sum is σ = 35015904. Its totient is φ = 6669680.

The previous prime is 16674209. The next prime is 16674221. The reversal of 16674220 is 2247661.

It is a super-2 number, since 2×16674220² = 556059225216800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16674221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 416836 + ... + 416875.

It is an arithmetic number, because the mean of its divisors is an integer number (2917992).

Almost surely, 2^16674220 is an apocalyptic number.

16674220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16674220 is an abundant number, since it is smaller than the sum of its proper divisors (18341684).

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

16674220 is a wasteful number, since it uses less digits than its factorization.

16674220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 833720 (or 833718 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 16674220 is about 4083.4078904758. The cubic root of 16674220 is about 255.4750595738.

The spelling of 16674220 in words is "sixteen million, six hundred seventy-four thousand, two hundred twenty".