140638480 has 40 divisors (see below), whose sum is σ = 335828952. Its totient is φ = 54733824.

The previous prime is 140638471. The next prime is 140638481. The reversal of 140638480 is 84836041.

It can be written as a sum of positive squares in 4 ways, for example, as 21566736 + 119071744 = 4644^2 + 10912^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (140638481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20797 + ... + 26716.

Almost surely, 2^140638480 is an apocalyptic number.

140638480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140638480 is an abundant number, since it is smaller than the sum of its proper divisors (195190472).

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

140638480 is a wasteful number, since it uses less digits than its factorization.

140638480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47563 (or 47557 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 140638480 is about 11859.1095787163. The cubic root of 140638480 is about 520.0375712498.

The spelling of 140638480 in words is "one hundred forty million, six hundred thirty-eight thousand, four hundred eighty".