538454920 has 16 divisors (see below), whose sum is σ = 1211523660. Its totient is φ = 215381952.

The previous prime is 538454911. The next prime is 538454921. The reversal of 538454920 is 29454835.

It can be written as a sum of positive squares in 2 ways, for example, as 510850404 + 27604516 = 22602^2 + 5254^2 .

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 13461373 = 538454920 / (5 + 3 + 8 + 4 + 5 + 4 + 9 + 2 + 0).

It is not an unprimeable number, because it can be changed into a prime (538454921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6730647 + ... + 6730726.

Almost surely, 2^538454920 is an apocalyptic number.

It is an amenable number.

538454920 is an abundant number, since it is smaller than the sum of its proper divisors (673068740).

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

538454920 is a wasteful number, since it uses less digits than its factorization.

538454920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13461384 (or 13461380 counting only the distinct ones).

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

The square root of 538454920 is about 23204.6314342633. The cubic root of 538454920 is about 813.5478777980.

The spelling of 538454920 in words is "five hundred thirty-eight million, four hundred fifty-four thousand, nine hundred twenty".