628164544 has 28 divisors (see below), whose sum is σ = 1424588464. Its totient is φ = 269213184.

The previous prime is 628164527. The next prime is 628164547. The reversal of 628164544 is 445461826.

It is a tau number, because it is divible by the number of its divisors (28).

It is a junction number, because it is equal to n+sod(n) for n = 628164497 and 628164506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628164547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 700629 + ... + 701524.

Almost surely, 2^628164544 is an apocalyptic number.

628164544 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

628164544 is an abundant number, since it is smaller than the sum of its proper divisors (796423920).

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

628164544 is a wasteful number, since it uses less digits than its factorization.

628164544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1402172 (or 1402162 counting only the distinct ones).

The product of its digits is 184320, while the sum is 40.

The square root of 628164544 is about 25063.2109674718. The cubic root of 628164544 is about 856.4285564791.

The spelling of 628164544 in words is "six hundred twenty-eight million, one hundred sixty-four thousand, five hundred forty-four".