266429140 has 24 divisors (see below), whose sum is σ = 564457320. Its totient is φ = 105627648.

The previous prime is 266429131. The next prime is 266429143. The reversal of 266429140 is 41924662.

It can be written as a sum of positive squares in 4 ways, for example, as 3794704 + 262634436 = 1948^2 + 16206^2 .

It is a super-2 number, since 2×266429140² = 141968973282279200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 266429096 and 266429105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266429143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56685 + ... + 61204.

It is an arithmetic number, because the mean of its divisors is an integer number (23519055).

Almost surely, 2^266429140 is an apocalyptic number.

266429140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

266429140 is an abundant number, since it is smaller than the sum of its proper divisors (298028180).

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

266429140 is a wasteful number, since it uses less digits than its factorization.

266429140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118011 (or 118009 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 266429140 is about 16322.6572591597. The cubic root of 266429140 is about 643.4684250714.

The spelling of 266429140 in words is "two hundred sixty-six million, four hundred twenty-nine thousand, one hundred forty".