266730406 has 16 divisors (see below), whose sum is σ = 406531440. Its totient is φ = 131235840.

The previous prime is 266730403. The next prime is 266730427. The reversal of 266730406 is 604037662.

It is a super-2 number, since 2×266730406² = 142290218969849672, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266730403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30886 + ... + 38566.

It is an arithmetic number, because the mean of its divisors is an integer number (25408215).

Almost surely, 2^266730406 is an apocalyptic number.

266730406 is a deficient number, since it is larger than the sum of its proper divisors (139801034).

266730406 is a wasteful number, since it uses less digits than its factorization.

266730406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7959.

The product of its (nonzero) digits is 36288, while the sum is 34.

The square root of 266730406 is about 16331.8831124889. The cubic root of 266730406 is about 643.7108686931.

The spelling of 266730406 in words is "two hundred sixty-six million, seven hundred thirty thousand, four hundred six".