266430672 has 60 divisors (see below), whose sum is σ = 750276384. Its totient is φ = 88257600.

The previous prime is 266430653. The next prime is 266430677. The reversal of 266430672 is 276034662.

It is a happy number.

266430672 is a `hidden beast` number, since 2 + 6 + 643 + 0 + 6 + 7 + 2 = 666.

266430672 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266430677) 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, 17797 + ... + 29147.

Almost surely, 2^266430672 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 266430672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (375138192).

266430672 is an abundant number, since it is smaller than the sum of its proper divisors (483845712).

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

266430672 is a wasteful number, since it uses less digits than its factorization.

266430672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11528 (or 11519 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 36.

The square root of 266430672 is about 16322.7041877258. The cubic root of 266430672 is about 643.4696584097.

The spelling of 266430672 in words is "two hundred sixty-six million, four hundred thirty thousand, six hundred seventy-two".