578172816 has 320 divisors, whose sum is σ = 1913210880. Its totient is φ = 167961600.

The previous prime is 578172779. The next prime is 578172851. The reversal of 578172816 is 618271875.

It is a happy number.

578172816 is a `hidden beast` number, since 578 + 1 + 72 + 8 + 1 + 6 = 666.

It is a super-2 number, since 2×578172816² = 668567610322739712, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 14101756 + ... + 14101796.

It is an arithmetic number, because the mean of its divisors is an integer number (5978784).

Almost surely, 2^578172816 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 578172816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (956605440).

578172816 is an abundant number, since it is smaller than the sum of its proper divisors (1335038064).

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

578172816 is a wasteful number, since it uses less digits than its factorization.

578172816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114 (or 90 counting only the distinct ones).

The product of its digits is 188160, while the sum is 45.

The square root of 578172816 is about 24045.2243907184. The cubic root of 578172816 is about 833.0784292722.

The spelling of 578172816 in words is "five hundred seventy-eight million, one hundred seventy-two thousand, eight hundred sixteen".