538173888 has 112 divisors (see below), whose sum is σ = 1679960064. Its totient is φ = 148792320.

The previous prime is 538173887. The next prime is 538173899. The reversal of 538173888 is 888371835.

It is a tau number, because it is divible by the number of its divisors (112).

It is a super-2 number, since 2×538173888² = 579262267450073088, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 538173888.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538173887) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35206 + ... + 48122.

Almost surely, 2^538173888 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 538173888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (839980032).

538173888 is an abundant number, since it is smaller than the sum of its proper divisors (1141786176).

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

538173888 is a wasteful number, since it uses less digits than its factorization.

538173888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12970 (or 12960 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 51.

The square root of 538173888 is about 23198.5751286582. The cubic root of 538173888 is about 813.4063167211.

The spelling of 538173888 in words is "five hundred thirty-eight million, one hundred seventy-three thousand, eight hundred eighty-eight".