628021347 has 8 divisors (see below), whose sum is σ = 837520656. Its totient is φ = 418601472.

The previous prime is 628021283. The next prime is 628021363. The reversal of 628021347 is 743120826.

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

It is not a de Polignac number, because 628021347 - 2⁶ = 628021283 is a prime.

It is not an unprimeable number, because it can be changed into a prime (628021367) 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, 2043 + ... + 35499.

It is an arithmetic number, because the mean of its divisors is an integer number (104690082).

Almost surely, 2^628021347 is an apocalyptic number.

628021347 is a deficient number, since it is larger than the sum of its proper divisors (209499309).

628021347 is a wasteful number, since it uses less digits than its factorization.

628021347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39717.

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 628021347 is about 25060.3540876820. The cubic root of 628021347 is about 856.3634741047.

The spelling of 628021347 in words is "six hundred twenty-eight million, twenty-one thousand, three hundred forty-seven".