140917780 has 48 divisors (see below), whose sum is σ = 311641344. Its totient is φ = 53419520.

The previous prime is 140917771. The next prime is 140917781. The reversal of 140917780 is 87719041.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140917781) 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 15 ways as a sum of consecutive naturals, for example, 50625 + ... + 53335.

It is an arithmetic number, because the mean of its divisors is an integer number (6492528).

Almost surely, 2^140917780 is an apocalyptic number.

140917780 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 140917780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155820672).

140917780 is an abundant number, since it is smaller than the sum of its proper divisors (170723564).

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

140917780 is a wasteful number, since it uses less digits than its factorization.

140917780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2856 (or 2854 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 37.

The square root of 140917780 is about 11870.8794956397. The cubic root of 140917780 is about 520.3815985961.

The spelling of 140917780 in words is "one hundred forty million, nine hundred seventeen thousand, seven hundred eighty".