628915382 has 4 divisors (see below), whose sum is σ = 943373076. Its totient is φ = 314457690.

The previous prime is 628915379. The next prime is 628915387. The reversal of 628915382 is 283519826.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628915387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157228844 + ... + 157228847.

It is an arithmetic number, because the mean of its divisors is an integer number (235843269).

Almost surely, 2^628915382 is an apocalyptic number.

628915382 is a deficient number, since it is larger than the sum of its proper divisors (314457694).

628915382 is a wasteful number, since it uses less digits than its factorization.

628915382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314457693.

The product of its digits is 207360, while the sum is 44.

The square root of 628915382 is about 25078.1853809242. The cubic root of 628915382 is about 856.7696470817.

The spelling of 628915382 in words is "six hundred twenty-eight million, nine hundred fifteen thousand, three hundred eighty-two".