538022730 has 64 divisors (see below), whose sum is σ = 1497784320. Its totient is φ = 121137984.

The previous prime is 538022729. The next prime is 538022741. The reversal of 538022730 is 37220835.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5050 + ... + 33189.

It is an arithmetic number, because the mean of its divisors is an integer number (23402880).

Almost surely, 2^538022730 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 538022730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (748892160).

538022730 is an abundant number, since it is smaller than the sum of its proper divisors (959761590).

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

538022730 is a wasteful number, since it uses less digits than its factorization.

538022730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38323.

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 538022730 is about 23195.3169842535. The cubic root of 538022730 is about 813.3301552251.

The spelling of 538022730 in words is "five hundred thirty-eight million, twenty-two thousand, seven hundred thirty".