266196428 has 6 divisors (see below), whose sum is σ = 465843756. Its totient is φ = 133098212.

The previous prime is 266196383. The next prime is 266196433. The reversal of 266196428 is 824691662.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33274550 + ... + 33274557.

It is an arithmetic number, because the mean of its divisors is an integer number (77640626).

Almost surely, 2^266196428 is an apocalyptic number.

It is an amenable number.

266196428 is a deficient number, since it is larger than the sum of its proper divisors (199647328).

266196428 is a wasteful number, since it uses less digits than its factorization.

266196428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66549111 (or 66549109 counting only the distinct ones).

The product of its digits is 248832, while the sum is 44.

The square root of 266196428 is about 16315.5272057019. The cubic root of 266196428 is about 643.2810250961.

The spelling of 266196428 in words is "two hundred sixty-six million, one hundred ninety-six thousand, four hundred twenty-eight".