628267939 has 8 divisors (see below), whose sum is σ = 677056352. Its totient is φ = 579545280.

The previous prime is 628267897. The next prime is 628267973. The reversal of 628267939 is 939762826.

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 628267939 - 2⁷ = 628267811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (628267639) 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, 4399 + ... + 35719.

It is an arithmetic number, because the mean of its divisors is an integer number (84632044).

Almost surely, 2^628267939 is an apocalyptic number.

628267939 is a deficient number, since it is larger than the sum of its proper divisors (48788413).

628267939 is a wasteful number, since it uses less digits than its factorization.

628267939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32877.

The product of its digits is 1959552, while the sum is 52.

The square root of 628267939 is about 25065.2735672284. The cubic root of 628267939 is about 856.4755428796.

The spelling of 628267939 in words is "six hundred twenty-eight million, two hundred sixty-seven thousand, nine hundred thirty-nine".