266728098 has 32 divisors (see below), whose sum is σ = 656562816. Its totient is φ = 70345728.

The previous prime is 266728093. The next prime is 266728127. The reversal of 266728098 is 890827662.

It is a happy number.

It is a super-2 number, since 2×266728098² = 142287756525395208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (266728093) 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 15 ways as a sum of consecutive naturals, for example, 243711 + ... + 244802.

It is an arithmetic number, because the mean of its divisors is an integer number (20517588).

Almost surely, 2^266728098 is an apocalyptic number.

266728098 is an abundant number, since it is smaller than the sum of its proper divisors (389834718).

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

266728098 is a wasteful number, since it uses less digits than its factorization.

266728098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488538.

The product of its (nonzero) digits is 580608, while the sum is 48.

The square root of 266728098 is about 16331.8124530010. The cubic root of 266728098 is about 643.7090120257.

The spelling of 266728098 in words is "two hundred sixty-six million, seven hundred twenty-eight thousand, ninety-eight".