538433140 has 48 divisors (see below), whose sum is σ = 1336809600. Its totient is φ = 178238592.

The previous prime is 538433131. The next prime is 538433149. The reversal of 538433140 is 41334835.

It is an interprime number because it is at equal distance from previous prime (538433131) and next prime (538433149).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538433149) 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, 62250 + ... + 70369.

It is an arithmetic number, because the mean of its divisors is an integer number (27850200).

Almost surely, 2^538433140 is an apocalyptic number.

It is an amenable number.

538433140 is an abundant number, since it is smaller than the sum of its proper divisors (798376460).

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

538433140 is a wasteful number, since it uses less digits than its factorization.

538433140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132664 (or 132662 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 538433140 is about 23204.1621266531. The cubic root of 538433140 is about 813.5369085654.

Adding to 538433140 its reverse (41334835), we get a palindrome (579767975).

The spelling of 538433140 in words is "five hundred thirty-eight million, four hundred thirty-three thousand, one hundred forty".