628888632 has 32 divisors (see below), whose sum is σ = 1640580480. Its totient is φ = 200515040.

The previous prime is 628888613. The next prime is 628888639. The reversal of 628888632 is 236888826.

It is a super-2 number, since 2×628888632² = 791001822917662848, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628888639) 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 7 ways as a sum of consecutive naturals, for example, 569094 + ... + 570197.

It is an arithmetic number, because the mean of its divisors is an integer number (51268140).

Almost surely, 2^628888632 is an apocalyptic number.

It is an amenable number.

628888632 is an abundant number, since it is smaller than the sum of its proper divisors (1011691848).

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

628888632 is a wasteful number, since it uses less digits than its factorization.

628888632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1139323 (or 1139319 counting only the distinct ones).

The product of its digits is 1769472, while the sum is 51.

The square root of 628888632 is about 25077.6520432037. The cubic root of 628888632 is about 856.7574997597.

The spelling of 628888632 in words is "six hundred twenty-eight million, eight hundred eighty-eight thousand, six hundred thirty-two".