628404467 has 8 divisors (see below), whose sum is σ = 633292800. Its totient is φ = 623529864.

The previous prime is 628404463. The next prime is 628404479. The reversal of 628404467 is 764404826.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 628404467 - 2² = 628404463 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (628404463) 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, 100334 + ... + 106412.

It is an arithmetic number, because the mean of its divisors is an integer number (79161600).

Almost surely, 2^628404467 is an apocalyptic number.

628404467 is a deficient number, since it is larger than the sum of its proper divisors (4888333).

628404467 is a wasteful number, since it uses less digits than its factorization.

628404467 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6865.

The product of its (nonzero) digits is 258048, while the sum is 41.

The square root of 628404467 is about 25067.9968685174. The cubic root of 628404467 is about 856.5375782080.

Subtracting from 628404467 its sum of digits (41), we obtain a triangular number (628404426 = T₃₅₄₅₁).

The spelling of 628404467 in words is "six hundred twenty-eight million, four hundred four thousand, four hundred sixty-seven".