538952440 has 64 divisors (see below), whose sum is σ = 1316367360. Its totient is φ = 197406720.

The previous prime is 538952437. The next prime is 538952441. The reversal of 538952440 is 44259835.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 538952393 and 538952402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538952441) 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, 61960 + ... + 70120.

It is an arithmetic number, because the mean of its divisors is an integer number (20568240).

Almost surely, 2^538952440 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 538952440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (658183680).

538952440 is an abundant number, since it is smaller than the sum of its proper divisors (777414920).

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

538952440 is a wasteful number, since it uses less digits than its factorization.

538952440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8312 (or 8308 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 40.

The square root of 538952440 is about 23215.3492327813. The cubic root of 538952440 is about 813.7983671935.

The spelling of 538952440 in words is "five hundred thirty-eight million, nine hundred fifty-two thousand, four hundred forty".