140067720 has 144 divisors (see below), whose sum is σ = 493087140. Its totient is φ = 34278912.

The previous prime is 140067713. The next prime is 140067731. The reversal of 140067720 is 27760041.

It can be written as a sum of positive squares in 6 ways, for example, as 99082116 + 40985604 = 9954^2 + 6402^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 809554 + ... + 809726.

Almost surely, 2^140067720 is an apocalyptic number.

140067720 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 140067720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (246543570).

140067720 is an abundant number, since it is smaller than the sum of its proper divisors (353019420).

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

140067720 is a wasteful number, since it uses less digits than its factorization.

140067720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376 (or 196 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 140067720 is about 11835.0209125291. The cubic root of 140067720 is about 519.3331194753. Note that the first 3 decimals are identical.

The spelling of 140067720 in words is "one hundred forty million, sixty-seven thousand, seven hundred twenty".