628227590 has 16 divisors (see below), whose sum is σ = 1190326320. Its totient is φ = 238065120.

The previous prime is 628227563. The next prime is 628227601. The reversal of 628227590 is 95722826.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1653041 + ... + 1653420.

It is an arithmetic number, because the mean of its divisors is an integer number (74395395).

Almost surely, 2^628227590 is an apocalyptic number.

628227590 is a deficient number, since it is larger than the sum of its proper divisors (562098730).

628227590 is a wasteful number, since it uses less digits than its factorization.

628227590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3306487.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 628227590 is about 25064.4686757968. The cubic root of 628227590 is about 856.4572074586.

The spelling of 628227590 in words is "six hundred twenty-eight million, two hundred twenty-seven thousand, five hundred ninety".