140506308 has 36 divisors (see below), whose sum is σ = 355586140. Its totient is φ = 46780416.

The previous prime is 140506307. The next prime is 140506321. The reversal of 140506308 is 803605041.

It can be written as a sum of positive squares in 2 ways, for example, as 5992704 + 134513604 = 2448^2 + 11598^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (140506307) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38916 + ... + 42372.

Almost surely, 2^140506308 is an apocalyptic number.

140506308 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

140506308 is an abundant number, since it is smaller than the sum of its proper divisors (215079832).

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

140506308 is a wasteful number, since it uses less digits than its factorization.

140506308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4596 (or 4591 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 140506308 is about 11853.5356750634. The cubic root of 140506308 is about 519.8746098059.

The spelling of 140506308 in words is "one hundred forty million, five hundred six thousand, three hundred eight".