266131328 has 128 divisors (see below), whose sum is σ = 609184800. Its totient is φ = 115015680.

The previous prime is 266131319. The next prime is 266131337. The reversal of 266131328 is 823131662.

It is an interprime number because it is at equal distance from previous prime (266131319) and next prime (266131337).

It is a tau number, because it is divible by the number of its divisors (128).

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 = 266131294 and 266131303.

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, 1695026 + ... + 1695182.

Almost surely, 2^266131328 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 266131328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (304592400).

266131328 is an abundant number, since it is smaller than the sum of its proper divisors (343053472).

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

266131328 is a wasteful number, since it uses less digits than its factorization.

266131328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248 (or 236 counting only the distinct ones).

The product of its digits is 10368, while the sum is 32.

The square root of 266131328 is about 16313.5320516435. The cubic root of 266131328 is about 643.2285813558.

The spelling of 266131328 in words is "two hundred sixty-six million, one hundred thirty-one thousand, three hundred twenty-eight".