266049040 has 40 divisors (see below), whose sum is σ = 620382168. Its totient is φ = 106106880.

The previous prime is 266049019. The next prime is 266049059. The reversal of 266049040 is 40940662.

It can be written as a sum of positive squares in 4 ways, for example, as 9024016 + 257025024 = 3004^2 + 16032^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 266048993 and 266049011.

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, 23530 + ... + 32950.

Almost surely, 2^266049040 is an apocalyptic number.

266049040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

266049040 is an abundant number, since it is smaller than the sum of its proper divisors (354333128).

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

266049040 is a wasteful number, since it uses less digits than its factorization.

266049040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9787 (or 9781 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 266049040 is about 16311.0097786740. The cubic root of 266049040 is about 643.1622789401.

The spelling of 266049040 in words is "two hundred sixty-six million, forty-nine thousand, forty".