266013450 has 192 divisors, whose sum is σ = 792270720. Its totient is φ = 65387520.

The previous prime is 266013439. The next prime is 266013457. The reversal of 266013450 is 54310662.

266013450 is a `hidden beast` number, since 2 + 6 + 601 + 3 + 4 + 50 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (266013457) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1537564 + ... + 1537736.

It is an arithmetic number, because the mean of its divisors is an integer number (4126410).

Almost surely, 2^266013450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 266013450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (396135360).

266013450 is an abundant number, since it is smaller than the sum of its proper divisors (526257270).

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

266013450 is a wasteful number, since it uses less digits than its factorization.

266013450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278 (or 267 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 266013450 is about 16309.9187612937. The cubic root of 266013450 is about 643.1335985557.

It can be divided in two parts, 2660 and 13450, that added together give a triangular number (16110 = T₁₇₉).

The spelling of 266013450 in words is "two hundred sixty-six million, thirteen thousand, four hundred fifty".