266432320 has 168 divisors, whose sum is σ = 797795712. Its totient is φ = 82959360.

The previous prime is 266432311. The next prime is 266432333. The reversal of 266432320 is 23234662.

It is a super-2 number, since 2×266432320² = 141972362281164800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 270549 + ... + 271531.

It is an arithmetic number, because the mean of its divisors is an integer number (4748784).

Almost surely, 2^266432320 is an apocalyptic number.

266432320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 266432320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (398897856).

266432320 is an abundant number, since it is smaller than the sum of its proper divisors (531363392).

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

266432320 is a wasteful number, since it uses less digits than its factorization.

266432320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1029 (or 1008 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 28.

The square root of 266432320 is about 16322.7546694790. The cubic root of 266432320 is about 643.4709851286.

Adding to 266432320 its reverse (23234662), we get a palindrome (289666982).

It can be divided in two parts, 26 and 6432320, that added together give a palindrome (6432346).

The spelling of 266432320 in words is "two hundred sixty-six million, four hundred thirty-two thousand, three hundred twenty".