628809190 has 32 divisors (see below), whose sum is σ = 1196052480. Its totient is φ = 237535584.

The previous prime is 628809143. The next prime is 628809211. The reversal of 628809190 is 91908826.

It is a happy number.

It is a super-2 number, since 2×628809190² = 790801994856912200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 867 + ... + 35473.

It is an arithmetic number, because the mean of its divisors is an integer number (37376640).

Almost surely, 2^628809190 is an apocalyptic number.

628809190 is a deficient number, since it is larger than the sum of its proper divisors (567243290).

628809190 is a wasteful number, since it uses less digits than its factorization.

628809190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34716.

The product of its (nonzero) digits is 62208, while the sum is 43.

The square root of 628809190 is about 25076.0680729655. The cubic root of 628809190 is about 856.7214226803.

The spelling of 628809190 in words is "six hundred twenty-eight million, eight hundred nine thousand, one hundred ninety".