266430388 has 24 divisors (see below), whose sum is σ = 560907200. Its totient is φ = 108174528.

The previous prime is 266430361. The next prime is 266430427. The reversal of 266430388 is 883034662.

It is a self number, because there is not a number n which added to its sum of digits gives 266430388.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 249873 + ... + 250936.

Almost surely, 2^266430388 is an apocalyptic number.

266430388 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

266430388 is an abundant number, since it is smaller than the sum of its proper divisors (294476812).

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

266430388 is a wasteful number, since it uses less digits than its factorization.

266430388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500839 (or 500837 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 40.

The square root of 266430388 is about 16322.6954881845. The cubic root of 266430388 is about 643.4694297755.

The spelling of 266430388 in words is "two hundred sixty-six million, four hundred thirty thousand, three hundred eighty-eight".