140667840 has 252 divisors, whose sum is σ = 509921256. Its totient is φ = 36951552.

The previous prime is 140667833. The next prime is 140667841. The reversal of 140667840 is 48766041.

It is a super-3 number, since 3×140667840³ (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 140667795 and 140667804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140667841) 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 35 ways as a sum of consecutive naturals, for example, 2099487 + ... + 2099553.

Almost surely, 2^140667840 is an apocalyptic number.

140667840 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 140667840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (254960628).

140667840 is an abundant number, since it is smaller than the sum of its proper divisors (369253416).

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

140667840 is an frugal number, since it uses more digits than its factorization.

140667840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108 (or 77 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 140667840 is about 11860.3473810846. The cubic root of 140667840 is about 520.0737567962.

The spelling of 140667840 in words is "one hundred forty million, six hundred sixty-seven thousand, eight hundred forty".