628062440 has 32 divisors (see below), whose sum is σ = 1427141160. Its totient is φ = 248736000.

The previous prime is 628062431. The next prime is 628062443. The reversal of 628062440 is 44260826.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 607031044 + 21031396 = 24638^2 + 4586^2 .

It is a junction number, because it is equal to n+sod(n) for n = 628062397 and 628062406.

It is not an unprimeable number, because it can be changed into a prime (628062443) by changing a digit.

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, 73691 + ... + 81770.

Almost surely, 2^628062440 is an apocalyptic number.

It is an amenable number.

628062440 is an abundant number, since it is smaller than the sum of its proper divisors (799078720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

628062440 is a wasteful number, since it uses less digits than its factorization.

628062440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155573 (or 155569 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 628062440 is about 25061.1739549447. The cubic root of 628062440 is about 856.3821516952.

The spelling of 628062440 in words is "six hundred twenty-eight million, sixty-two thousand, four hundred forty".