623042928 has 100 divisors (see below), whose sum is σ = 1909409040. Its totient is φ = 195457536.

The previous prime is 623042909. The next prime is 623042939. The reversal of 623042928 is 829240326.

623042928 is a `hidden beast` number, since 62 + 304 + 292 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 623042892 and 623042901.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 7893 + ... + 36171.

Almost surely, 2^623042928 is an apocalyptic number.

623042928 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 623042928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (954704520).

623042928 is an abundant number, since it is smaller than the sum of its proper divisors (1286366112).

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

623042928 is a wasteful number, since it uses less digits than its factorization.

623042928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28316 (or 28301 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 623042928 is about 24960.8278708860. The cubic root of 623042928 is about 854.0946279609.

The spelling of 623042928 in words is "six hundred twenty-three million, forty-two thousand, nine hundred twenty-eight".