628911442 has 8 divisors (see below), whose sum is σ = 943996032. Its totient is φ = 314246100.

The previous prime is 628911427. The next prime is 628911443. The reversal of 628911442 is 244119826.

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

It is not an unprimeable number, because it can be changed into a prime (628911443) 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, 101034 + ... + 107077.

It is an arithmetic number, because the mean of its divisors is an integer number (117999504).

Almost surely, 2^628911442 is an apocalyptic number.

628911442 is a deficient number, since it is larger than the sum of its proper divisors (315084590).

628911442 is a wasteful number, since it uses less digits than its factorization.

628911442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209624.

The product of its digits is 27648, while the sum is 37.

The square root of 628911442 is about 25078.1068264732. The cubic root of 628911442 is about 856.7678579277.

The spelling of 628911442 in words is "six hundred twenty-eight million, nine hundred eleven thousand, four hundred forty-two".