538368840 has 48 divisors (see below), whose sum is σ = 1749699900. Its totient is φ = 143564928.

The previous prime is 538368839. The next prime is 538368841. The reversal of 538368840 is 48863835.

538368840 is a `hidden beast` number, since 538 + 36 + 8 + 84 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (538368839) and next prime (538368841).

It can be written as a sum of positive squares in 2 ways, for example, as 477247716 + 61121124 = 21846^2 + 7818^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (538368841) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 747375 + ... + 748094.

Almost surely, 2^538368840 is an apocalyptic number.

It is an amenable number.

538368840 is an abundant number, since it is smaller than the sum of its proper divisors (1211331060).

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

538368840 is a wasteful number, since it uses less digits than its factorization.

538368840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1495486 (or 1495479 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The square root of 538368840 is about 23202.7765579898. The cubic root of 538368840 is about 813.5045229253.

The spelling of 538368840 in words is "five hundred thirty-eight million, three hundred sixty-eight thousand, eight hundred forty".