266926842 has 96 divisors (see below), whose sum is σ = 720195840. Its totient is φ = 69569280.

The previous prime is 266926811. The next prime is 266926873. The reversal of 266926842 is 248629662.

It is an interprime number because it is at equal distance from previous prime (266926811) and next prime (266926873).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 144867 + ... + 146697.

It is an arithmetic number, because the mean of its divisors is an integer number (7502040).

Almost surely, 2^266926842 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 266926842, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (360097920).

266926842 is an abundant number, since it is smaller than the sum of its proper divisors (453268998).

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

266926842 is a wasteful number, since it uses less digits than its factorization.

266926842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1948 (or 1945 counting only the distinct ones).

The product of its digits is 497664, while the sum is 45.

The square root of 266926842 is about 16337.8958865577. The cubic root of 266926842 is about 643.8688521311.

The spelling of 266926842 in words is "two hundred sixty-six million, nine hundred twenty-six thousand, eight hundred forty-two".