266560140 has 96 divisors (see below), whose sum is σ = 930553344. Its totient is φ = 55388160.

The previous prime is 266560127. The next prime is 266560169. The reversal of 266560140 is 41065662.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 266560098 and 266560107.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24229 + ... + 33468.

It is an arithmetic number, because the mean of its divisors is an integer number (9693264).

Almost surely, 2^266560140 is an apocalyptic number.

266560140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

266560140 is an abundant number, since it is smaller than the sum of its proper divisors (663993204).

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

266560140 is a wasteful number, since it uses less digits than its factorization.

266560140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57727 (or 57725 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 266560140 is about 16326.6695930309. The cubic root of 266560140 is about 643.5738696835.

The spelling of 266560140 in words is "two hundred sixty-six million, five hundred sixty thousand, one hundred forty".