266016128 has 64 divisors (see below), whose sum is σ = 608083200. Its totient is φ = 113551872.

The previous prime is 266016089. The next prime is 266016133. The reversal of 266016128 is 821610662.

266016128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×266016128² = 141529160712224768, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 266016094 and 266016103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 321251 + ... + 322077.

It is an arithmetic number, because the mean of its divisors is an integer number (9501300).

Almost surely, 2^266016128 is an apocalyptic number.

266016128 is a gapful number since it is divisible by the number (28) 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 266016128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (304041600).

266016128 is an abundant number, since it is smaller than the sum of its proper divisors (342067072).

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

266016128 is an equidigital number, since it uses as much as digits as its factorization.

266016128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1207 (or 1195 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 266016128 is about 16310.0008583691. Note that the first 3 decimals coincide. The cubic root of 266016128 is about 643.1357567247.

The spelling of 266016128 in words is "two hundred sixty-six million, sixteen thousand, one hundred twenty-eight".