140172650 has 48 divisors (see below), whose sum is σ = 283582296. Its totient is φ = 51333120.

The previous prime is 140172611. The next prime is 140172653. The reversal of 140172650 is 56271041.

It can be written as a sum of positive squares in 12 ways, for example, as 62362609 + 77810041 = 7897^2 + 8821^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (140172653) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29222 + ... + 33678.

Almost surely, 2^140172650 is an apocalyptic number.

140172650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

140172650 is an abundant number, since it is smaller than the sum of its proper divisors (143409646).

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

140172650 is a wasteful number, since it uses less digits than its factorization.

140172650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4523 (or 4518 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 140172650 is about 11839.4531123697. The cubic root of 140172650 is about 519.4627710994.

The spelling of 140172650 in words is "one hundred forty million, one hundred seventy-two thousand, six hundred fifty".