628145774 has 16 divisors (see below), whose sum is σ = 950461776. Its totient is φ = 311337600.

The previous prime is 628145759. The next prime is 628145783. The reversal of 628145774 is 477541826.

It is a super-2 number, since 2×628145774² = 789134226788118152, 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 (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106544 + ... + 112284.

It is an arithmetic number, because the mean of its divisors is an integer number (59403861).

Almost surely, 2^628145774 is an apocalyptic number.

628145774 is a deficient number, since it is larger than the sum of its proper divisors (322316002).

628145774 is a wasteful number, since it uses less digits than its factorization.

628145774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6211.

The product of its digits is 376320, while the sum is 44.

The square root of 628145774 is about 25062.8365114566. The cubic root of 628145774 is about 856.4200261642.

The spelling of 628145774 in words is "six hundred twenty-eight million, one hundred forty-five thousand, seven hundred seventy-four".