538722744 has 128 divisors (see below), whose sum is σ = 1622384640. Its totient is φ = 145740672.

The previous prime is 538722733. The next prime is 538722757. The reversal of 538722744 is 447227835.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 538722696 and 538722705.

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, 412797 + ... + 414099.

It is an arithmetic number, because the mean of its divisors is an integer number (12674880).

Almost surely, 2^538722744 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 538722744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (811192320).

538722744 is an abundant number, since it is smaller than the sum of its proper divisors (1083661896).

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

538722744 is a wasteful number, since it uses less digits than its factorization.

538722744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1449 (or 1445 counting only the distinct ones).

The product of its digits is 376320, while the sum is 42.

The square root of 538722744 is about 23210.4016337503. The cubic root of 538722744 is about 813.6827399275.

It can be divided in two parts, 53872 and 2744, that added together give a triangular number (56616 = T₃₃₆).

The spelling of 538722744 in words is "five hundred thirty-eight million, seven hundred twenty-two thousand, seven hundred forty-four".