538102440 has 80 divisors (see below), whose sum is σ = 1808632980. Its totient is φ = 143493120.

The previous prime is 538102427. The next prime is 538102459. The reversal of 538102440 is 44201835.

It can be written as a sum of positive squares in 2 ways, for example, as 523402884 + 14699556 = 22878^2 + 3834^2 .

It is a super-3 number, since 3×538102440³ (a number of 27 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 79801 + ... + 86280.

Almost surely, 2^538102440 is an apocalyptic number.

It is an amenable number.

538102440 is an abundant number, since it is smaller than the sum of its proper divisors (1270530540).

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

538102440 is a wasteful number, since it uses less digits than its factorization.

538102440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166104 (or 166091 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 538102440 is about 23197.0351553814. The cubic root of 538102440 is about 813.3703191697.

The spelling of 538102440 in words is "five hundred thirty-eight million, one hundred two thousand, four hundred forty".