266773540 has 36 divisors (see below), whose sum is σ = 615789468. Its totient is φ = 97007680.

The previous prime is 266773519. The next prime is 266773543. The reversal of 266773540 is 45377662.

266773540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 195776064 + 70997476 = 13992^2 + 8426^2 .

It is a junction number, because it is equal to n+sod(n) for n = 266773493 and 266773502.

It is not an unprimeable number, because it can be changed into a prime (266773543) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52699 + ... + 57538.

It is an arithmetic number, because the mean of its divisors is an integer number (17105263).

Almost surely, 2^266773540 is an apocalyptic number.

266773540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

266773540 is an abundant number, since it is smaller than the sum of its proper divisors (349015928).

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

266773540 is a wasteful number, since it uses less digits than its factorization.

266773540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110268 (or 110255 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 40.

The square root of 266773540 is about 16333.2036049270. The cubic root of 266773540 is about 643.7455658098.

The spelling of 266773540 in words is "two hundred sixty-six million, seven hundred seventy-three thousand, five hundred forty".