628132045 has 4 divisors (see below), whose sum is σ = 753758460. Its totient is φ = 502505632.

The previous prime is 628132027. The next prime is 628132049. The reversal of 628132045 is 540231826.

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

It can be written as a sum of positive squares in 2 ways, for example, as 161442436 + 466689609 = 12706^2 + 21603^2 .

It is a cyclic number.

It is not a de Polignac number, because 628132045 - 2¹⁷ = 628000973 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 628131998 and 628132016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628132049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62813200 + ... + 62813209.

It is an arithmetic number, because the mean of its divisors is an integer number (188439615).

Almost surely, 2^628132045 is an apocalyptic number.

It is an amenable number.

628132045 is a deficient number, since it is larger than the sum of its proper divisors (125626415).

628132045 is a wasteful number, since it uses less digits than its factorization.

628132045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125626414.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 628132045 is about 25062.5626183756. The cubic root of 628132045 is about 856.4137867016.

The spelling of 628132045 in words is "six hundred twenty-eight million, one hundred thirty-two thousand, forty-five".