612457328 has 80 divisors (see below), whose sum is σ = 1406576640. Its totient is φ = 252806400.

The previous prime is 612457309. The next prime is 612457331. The reversal of 612457328 is 823754216.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 612457291 and 612457300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1454558 + ... + 1454978.

It is an arithmetic number, because the mean of its divisors is an integer number (17582208).

Almost surely, 2^612457328 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 612457328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (703288320).

612457328 is an abundant number, since it is smaller than the sum of its proper divisors (794119312).

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

612457328 is a wasteful number, since it uses less digits than its factorization.

612457328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 886 (or 880 counting only the distinct ones).

The product of its digits is 80640, while the sum is 38.

The square root of 612457328 is about 24747.8752219256. The cubic root of 612457328 is about 849.2299036601.

The spelling of 612457328 in words is "six hundred twelve million, four hundred fifty-seven thousand, three hundred twenty-eight".