628045238 has 8 divisors (see below), whose sum is σ = 942203232. Its totient is φ = 313977496.

The previous prime is 628045237. The next prime is 628045241. The reversal of 628045238 is 832540826.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628045237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1070 + ... + 35457.

It is an arithmetic number, because the mean of its divisors is an integer number (117775404).

Almost surely, 2^628045238 is an apocalyptic number.

628045238 is a deficient number, since it is larger than the sum of its proper divisors (314157994).

628045238 is a wasteful number, since it uses less digits than its factorization.

628045238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45126.

The product of its (nonzero) digits is 92160, while the sum is 38.

The square root of 628045238 is about 25060.8307523913. The cubic root of 628045238 is about 856.3743331413.

The spelling of 628045238 in words is "six hundred twenty-eight million, forty-five thousand, two hundred thirty-eight".