628637772 has 24 divisors (see below), whose sum is σ = 1676367616. Its totient is φ = 179610768.

The previous prime is 628637761. The next prime is 628637773. The reversal of 628637772 is 277736826.

It is not an unprimeable number, because it can be changed into a prime (628637773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3741808 + ... + 3741975.

Almost surely, 2^628637772 is an apocalyptic number.

It is an amenable number.

628637772 is an abundant number, since it is smaller than the sum of its proper divisors (1047729844).

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

628637772 is a wasteful number, since it uses less digits than its factorization.

628637772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7483797 (or 7483795 counting only the distinct ones).

The product of its digits is 1185408, while the sum is 48.

The square root of 628637772 is about 25072.6498798990. The cubic root of 628637772 is about 856.6435660893.

The spelling of 628637772 in words is "six hundred twenty-eight million, six hundred thirty-seven thousand, seven hundred seventy-two".