538987716 has 48 divisors (see below), whose sum is σ = 1403438400. Its totient is φ = 178883136.

The previous prime is 538987711. The next prime is 538987717. The reversal of 538987716 is 617789835.

538987716 is a `hidden beast` number, since 538 + 98 + 7 + 7 + 16 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (538987711) 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, 14455 + ... + 35873.

It is an arithmetic number, because the mean of its divisors is an integer number (29238300).

Almost surely, 2^538987716 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 538987716, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (701719200).

538987716 is an abundant number, since it is smaller than the sum of its proper divisors (864450684).

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

538987716 is a wasteful number, since it uses less digits than its factorization.

538987716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21665 (or 21657 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 54.

The square root of 538987716 is about 23216.1089763121. The cubic root of 538987716 is about 813.8161219604.

The spelling of 538987716 in words is "five hundred thirty-eight million, nine hundred eighty-seven thousand, seven hundred sixteen".