538168320 has 352 divisors, whose sum is σ = 2033899200. Its totient is φ = 134479872.

The previous prime is 538168297. The next prime is 538168327. The reversal of 538168320 is 23861835.

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

It is not an unprimeable number, because it can be changed into a prime (538168327) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2349966 + ... + 2350194.

Almost surely, 2^538168320 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 538168320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1016949600).

538168320 is an abundant number, since it is smaller than the sum of its proper divisors (1495730880).

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

538168320 is a wasteful number, since it uses less digits than its factorization.

538168320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280 (or 256 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 538168320 is about 23198.4551209773. The cubic root of 538168320 is about 813.4035115175.

The spelling of 538168320 in words is "five hundred thirty-eight million, one hundred sixty-eight thousand, three hundred twenty".