140633538 has 8 divisors (see below), whose sum is σ = 281267088. Its totient is φ = 46877844.

The previous prime is 140633533. The next prime is 140633599. The reversal of 140633538 is 835336041.

It is a sphenic number, since it is the product of 3 distinct primes.

140633538 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 140633499 and 140633508.

It is not an unprimeable number, because it can be changed into a prime (140633531) 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, 11719456 + ... + 11719467.

It is an arithmetic number, because the mean of its divisors is an integer number (35158386).

Almost surely, 2^140633538 is an apocalyptic number.

140633538 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

140633538 is a wasteful number, since it uses less digits than its factorization.

140633538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23438928.

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 140633538 is about 11858.9012138562. The cubic root of 140633538 is about 520.0314798497.

Adding to 140633538 its reverse (835336041), we get a palindrome (975969579).

The spelling of 140633538 in words is "one hundred forty million, six hundred thirty-three thousand, five hundred thirty-eight".