538085440 has 28 divisors (see below), whose sum is σ = 1281316716. Its totient is φ = 215234048.

The previous prime is 538085423. The next prime is 538085461. The reversal of 538085440 is 44580835.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 126157824 + 411927616 = 11232^2 + 20296^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 538085440.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 840439 + ... + 841078.

Almost surely, 2^538085440 is an apocalyptic number.

It is an amenable number.

538085440 is an abundant number, since it is smaller than the sum of its proper divisors (743231276).

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

538085440 is a wasteful number, since it uses less digits than its factorization.

538085440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1681534 (or 1681524 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 37.

The square root of 538085440 is about 23196.6687263495. The cubic root of 538085440 is about 813.3617536129.

The spelling of 538085440 in words is "five hundred thirty-eight million, eighty-five thousand, four hundred forty".