628343378 has 16 divisors (see below), whose sum is σ = 1015480536. Its totient is φ = 289872000.

The previous prime is 628343299. The next prime is 628343389. The reversal of 628343378 is 873343826.

It can be written as a sum of positive squares in 4 ways, for example, as 521985409 + 106357969 = 22847^2 + 10313^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74000 + ... + 82052.

Almost surely, 2^628343378 is an apocalyptic number.

628343378 is a deficient number, since it is larger than the sum of its proper divisors (387137158).

628343378 is a wasteful number, since it uses less digits than its factorization.

628343378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11069.

The product of its digits is 580608, while the sum is 44.

The square root of 628343378 is about 25066.7783729780. The cubic root of 628343378 is about 856.5098218173.

The spelling of 628343378 in words is "six hundred twenty-eight million, three hundred forty-three thousand, three hundred seventy-eight".