140885730 has 40 divisors (see below), whose sum is σ = 378828252. Its totient is φ = 37569312.

The previous prime is 140885699. The next prime is 140885737. The reversal of 140885730 is 37588041.

140885730 is a `hidden beast` number, since 1 + 4 + 0 + 88 + 573 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 136258929 + 4626801 = 11673^2 + 2151^2 .

It is a super-3 number, since 3×140885730³ (a number of 25 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (140885737) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 86157 + ... + 87776.

Almost surely, 2^140885730 is an apocalyptic number.

140885730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

140885730 is an abundant number, since it is smaller than the sum of its proper divisors (237942522).

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

140885730 is a wasteful number, since it uses less digits than its factorization.

140885730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173952 (or 173943 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 140885730 is about 11869.5294767737. The cubic root of 140885730 is about 520.3421441596.

The spelling of 140885730 in words is "one hundred forty million, eight hundred eighty-five thousand, seven hundred thirty".