538623390 has 64 divisors (see below), whose sum is σ = 1322956800. Its totient is φ = 140302464.

The previous prime is 538623377. The next prime is 538623401. The reversal of 538623390 is 93326835.

538623390 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 305331 + ... + 307089.

It is an arithmetic number, because the mean of its divisors is an integer number (20671200).

Almost surely, 2^538623390 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 538623390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (661478400).

538623390 is an abundant number, since it is smaller than the sum of its proper divisors (784333410).

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

538623390 is a wasteful number, since it uses less digits than its factorization.

538623390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2001.

The product of its (nonzero) digits is 116640, while the sum is 39.

The square root of 538623390 is about 23208.2612446517. The cubic root of 538623390 is about 813.6327156765.

The spelling of 538623390 in words is "five hundred thirty-eight million, six hundred twenty-three thousand, three hundred ninety".