16266840 has 64 divisors (see below), whose sum is σ = 49075200. Its totient is φ = 4313472.

The previous prime is 16266839. The next prime is 16266853. The reversal of 16266840 is 4866261.

It is a happy number.

16266840 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 is a super-2 number, since 2×16266840² = 529220167171200, which contains 22 as substring.

It is a congruent number.

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, 33721 + ... + 34199.

It is an arithmetic number, because the mean of its divisors is an integer number (766800).

Almost surely, 2^16266840 is an apocalyptic number.

16266840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16266840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24537600).

16266840 is an abundant number, since it is smaller than the sum of its proper divisors (32808360).

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

16266840 is a wasteful number, since it uses less digits than its factorization.

16266840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 776 (or 772 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 16266840 is about 4033.2170782144. The cubic root of 16266840 is about 253.3773161554.

The spelling of 16266840 in words is "sixteen million, two hundred sixty-six thousand, eight hundred forty".