16444660 has 12 divisors (see below), whose sum is σ = 34533828. Its totient is φ = 6577856.

The previous prime is 16444639. The next prime is 16444679. The reversal of 16444660 is 6644461.

It can be written as a sum of positive squares in 2 ways, for example, as 10510564 + 5934096 = 3242^2 + 2436^2 .

It is a congruent number.

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, 411097 + ... + 411136.

It is an arithmetic number, because the mean of its divisors is an integer number (2877819).

Almost surely, 2^16444660 is an apocalyptic number.

16444660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16444660 is an abundant number, since it is smaller than the sum of its proper divisors (18089168).

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

16444660 is a wasteful number, since it uses less digits than its factorization.

16444660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 822242 (or 822240 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 16444660 is about 4055.2015979480. The cubic root of 16444660 is about 254.2972319706.

The spelling of 16444660 in words is "sixteen million, four hundred forty-four thousand, six hundred sixty".