538307540 has 24 divisors (see below), whose sum is σ = 1156737120. Its totient is φ = 210315168.

The previous prime is 538307531. The next prime is 538307543. The reversal of 538307540 is 45703835.

It is a self number, because there is not a number n which added to its sum of digits gives 538307540.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538307543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 312110 + ... + 313829.

It is an arithmetic number, because the mean of its divisors is an integer number (48197380).

Almost surely, 2^538307540 is an apocalyptic number.

It is an amenable number.

538307540 is an abundant number, since it is smaller than the sum of its proper divisors (618429580).

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

538307540 is a wasteful number, since it uses less digits than its factorization.

538307540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625991 (or 625989 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 35.

The square root of 538307540 is about 23201.4555577877. The cubic root of 538307540 is about 813.4736458782.

The spelling of 538307540 in words is "five hundred thirty-eight million, three hundred seven thousand, five hundred forty".