140936640 has 224 divisors, whose sum is σ = 503870976. Its totient is φ = 33116160.

The previous prime is 140936611. The next prime is 140936717. The reversal of 140936640 is 46639041.

140936640 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 286795 + ... + 287285.

It is an arithmetic number, because the mean of its divisors is an integer number (2249424).

Almost surely, 2^140936640 is an apocalyptic number.

140936640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140936640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (251935488).

140936640 is an abundant number, since it is smaller than the sum of its proper divisors (362934336).

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

140936640 is a wasteful number, since it uses less digits than its factorization.

140936640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547 (or 537 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 140936640 is about 11871.6738499674. The cubic root of 140936640 is about 520.4048129819.

The spelling of 140936640 in words is "one hundred forty million, nine hundred thirty-six thousand, six hundred forty".