140231648 has 24 divisors (see below), whose sum is σ = 277943400. Its totient is φ = 69642880.

The previous prime is 140231633. The next prime is 140231659. The reversal of 140231648 is 846132041.

It is a self number, because there is not a number n which added to its sum of digits gives 140231648.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9938 + ... + 19473.

It is an arithmetic number, because the mean of its divisors is an integer number (11580975).

Almost surely, 2^140231648 is an apocalyptic number.

It is an amenable number.

140231648 is a deficient number, since it is larger than the sum of its proper divisors (137711752).

140231648 is a wasteful number, since it uses less digits than its factorization.

140231648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29570 (or 29562 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 140231648 is about 11841.9444349313. The cubic root of 140231648 is about 519.5356406780.

Adding to 140231648 its reverse (846132041), we get a palindrome (986363689).

The spelling of 140231648 in words is "one hundred forty million, two hundred thirty-one thousand, six hundred forty-eight".