266628453 has 72 divisors (see below), whose sum is σ = 461984544. Its totient is φ = 135555840.

The previous prime is 266628451. The next prime is 266628469. The reversal of 266628453 is 354826662.

It is a happy number.

It is not a de Polignac number, because 266628453 - 2¹ = 266628451 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266628451) by changing a digit.

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 71 ways as a sum of consecutive naturals, for example, 3212350 + ... + 3212432.

It is an arithmetic number, because the mean of its divisors is an integer number (6416452).

Almost surely, 2^266628453 is an apocalyptic number.

It is an amenable number.

266628453 is a deficient number, since it is larger than the sum of its proper divisors (195356091).

266628453 is a wasteful number, since it uses less digits than its factorization.

266628453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195 (or 147 counting only the distinct ones).

The product of its digits is 414720, while the sum is 42.

The square root of 266628453 is about 16328.7615268274. The cubic root of 266628453 is about 643.6288425271.

The spelling of 266628453 in words is "two hundred sixty-six million, six hundred twenty-eight thousand, four hundred fifty-three".