538938240 has 64 divisors (see below), whose sum is σ = 1717871760. Its totient is φ = 143716352.

The previous prime is 538938223. The next prime is 538938259. The reversal of 538938240 is 42839835.

It is a tau number, because it is divible by the number of its divisors (64).

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 538938192 and 538938201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138429 + ... + 142268.

Almost surely, 2^538938240 is an apocalyptic number.

It is an amenable number.

538938240 is an abundant number, since it is smaller than the sum of its proper divisors (1178933520).

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

538938240 is a wasteful number, since it uses less digits than its factorization.

538938240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280719 (or 280707 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 42.

The square root of 538938240 is about 23215.0433986241. The cubic root of 538938240 is about 813.7912199714.

The spelling of 538938240 in words is "five hundred thirty-eight million, nine hundred thirty-eight thousand, two hundred forty".