266747904 has 180 divisors, whose sum is σ = 811048784. Its totient is φ = 87588864.

The previous prime is 266747903. The next prime is 266747941. The reversal of 266747904 is 409747662.

It is a nialpdrome in base 12 and base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 266747904.

It is not an unprimeable number, because it can be changed into a prime (266747903) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3981279 + ... + 3981345.

Almost surely, 2^266747904 is an apocalyptic number.

266747904 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 266747904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (405524392).

266747904 is an abundant number, since it is smaller than the sum of its proper divisors (544300880).

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

266747904 is an frugal number, since it uses more digits than its factorization.

266747904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110 (or 72 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 45.

The square root of 266747904 is about 16332.4188043290. The cubic root of 266747904 is about 643.7249445868.

The spelling of 266747904 in words is "two hundred sixty-six million, seven hundred forty-seven thousand, nine hundred four".