266828004 has 18 divisors (see below), whose sum is σ = 674481990. Its totient is φ = 88942656.

The previous prime is 266827993. The next prime is 266828017. The reversal of 266828004 is 400828662.

It can be written as a sum of positive squares in only one way, i.e., 263412900 + 3415104 = 16230^2 + 1848^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 7411889 = 266828004 / (2 + 6 + 6 + 8 + 2 + 8 + 0 + 0 + 4).

It is a self number, because there is not a number n which added to its sum of digits gives 266828004.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3705909 + ... + 3705980.

Almost surely, 2^266828004 is an apocalyptic number.

It is an amenable number.

266828004 is an abundant number, since it is smaller than the sum of its proper divisors (407653986).

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

266828004 is a wasteful number, since it uses less digits than its factorization.

266828004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7411899 (or 7411894 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The square root of 266828004 is about 16334.8707983871. The cubic root of 266828004 is about 643.7893714695.

The spelling of 266828004 in words is "two hundred sixty-six million, eight hundred twenty-eight thousand, four".