266898450 has 96 divisors (see below), whose sum is σ = 814697856. Its totient is φ = 56309760.

The previous prime is 266898433. The next prime is 266898461. The reversal of 266898450 is 54898662.

It is a happy number.

It is a super-2 number, since 2×266898450² = 142469565224805000, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 266898450.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3874 + ... + 23426.

It is an arithmetic number, because the mean of its divisors is an integer number (8486436).

Almost surely, 2^266898450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 266898450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (407348928).

266898450 is an abundant number, since it is smaller than the sum of its proper divisors (547799406).

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

266898450 is a wasteful number, since it uses less digits than its factorization.

266898450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19588 (or 19583 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 48.

The square root of 266898450 is about 16337.0269633125. The cubic root of 266898450 is about 643.8460226890.

The spelling of 266898450 in words is "two hundred sixty-six million, eight hundred ninety-eight thousand, four hundred fifty".