395226728 has 16 divisors (see below), whose sum is σ = 798054180. Its totient is φ = 182412288.

The previous prime is 395226707. The next prime is 395226737. The reversal of 395226728 is 827622593.

It can be written as a sum of positive squares in 2 ways, for example, as 350363524 + 44863204 = 18718^2 + 6698^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1900025 + ... + 1900232.

Almost surely, 2^395226728 is an apocalyptic number.

It is an amenable number.

395226728 is an abundant number, since it is smaller than the sum of its proper divisors (402827452).

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

395226728 is a wasteful number, since it uses less digits than its factorization.

395226728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3800276 (or 3800272 counting only the distinct ones).

The product of its digits is 362880, while the sum is 44.

The square root of 395226728 is about 19880.3100579443. The cubic root of 395226728 is about 733.8637497769.

The spelling of 395226728 in words is "three hundred ninety-five million, two hundred twenty-six thousand, seven hundred twenty-eight".