16422660 has 36 divisors (see below), whose sum is σ = 49815948. Its totient is φ = 4379328.

The previous prime is 16422649. The next prime is 16422661. The reversal of 16422660 is 6622461.

It is a happy number.

16422660 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2762244 + 13660416 = 1662^2 + 3696^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×16422660² = 539407522951200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16422661) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45439 + ... + 45798.

Almost surely, 2^16422660 is an apocalyptic number.

16422660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16422660 is an abundant number, since it is smaller than the sum of its proper divisors (33393288).

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

16422660 is a wasteful number, since it uses less digits than its factorization.

16422660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91252 (or 91247 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 16422660 is about 4052.4881245970. The cubic root of 16422660 is about 254.1837800296.

The spelling of 16422660 in words is "sixteen million, four hundred twenty-two thousand, six hundred sixty".