140281836 has 12 divisors (see below), whose sum is σ = 327324312. Its totient is φ = 46760608.

The previous prime is 140281783. The next prime is 140281849. The reversal of 140281836 is 638182041.

140281836 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 140281797 and 140281806.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5845065 + ... + 5845088.

It is an arithmetic number, because the mean of its divisors is an integer number (27277026).

Almost surely, 2^140281836 is an apocalyptic number.

It is an amenable number.

140281836 is an abundant number, since it is smaller than the sum of its proper divisors (187042476).

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

140281836 is a wasteful number, since it uses less digits than its factorization.

140281836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11690160 (or 11690158 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 140281836 is about 11844.0633230323. The cubic root of 140281836 is about 519.5976127675.

It can be divided in two parts, 1402 and 81836, that added together give a palindrome (83238).

The spelling of 140281836 in words is "one hundred forty million, two hundred eighty-one thousand, eight hundred thirty-six".