628436100 has 36 divisors (see below), whose sum is σ = 1818275984. Its totient is φ = 167582880.

The previous prime is 628436089. The next prime is 628436101. The reversal of 628436100 is 1634826.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (628436101) 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 11 ways as a sum of consecutive naturals, for example, 1047094 + ... + 1047693.

Almost surely, 2^628436100 is an apocalyptic number.

628436100 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

628436100 is an abundant number, since it is smaller than the sum of its proper divisors (1189839884).

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

628436100 is a wasteful number, since it uses less digits than its factorization.

628436100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2094804 (or 2094797 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 628436100 is about 25068.6278044890. The cubic root of 628436100 is about 856.5519502672.

The spelling of 628436100 in words is "six hundred twenty-eight million, four hundred thirty-six thousand, one hundred".