624128 has 40 divisors (see below), whose sum is σ = 1325808. Its totient is φ = 292864.

The previous prime is 624119. The next prime is 624133. The reversal of 624128 is 821426.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a nialpdrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11750 + ... + 11802.

2⁶²⁴¹²⁸ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 624128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (662904).

624128 is an abundant number, since it is smaller than the sum of its proper divisors (701680).

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

624128 is an equidigital number, since it uses as much as digits as its factorization.

624128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94 (or 78 counting only the distinct ones).

The product of its digits is 768, while the sum is 23.

The square root of 624128 is about 790.0177213202. The cubic root of 624128 is about 85.4590161865.

The spelling of 624128 in words is "six hundred twenty-four thousand, one hundred twenty-eight".