140679280 has 80 divisors (see below), whose sum is σ = 375779520. Its totient is φ = 47978496.

The previous prime is 140679277. The next prime is 140679281. The reversal of 140679280 is 82976041.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140679281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127692 + ... + 128788.

It is an arithmetic number, because the mean of its divisors is an integer number (4697244).

Almost surely, 2^140679280 is an apocalyptic number.

140679280 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 140679280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187889760).

140679280 is an abundant number, since it is smaller than the sum of its proper divisors (235100240).

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

140679280 is a wasteful number, since it uses less digits than its factorization.

140679280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1346 (or 1340 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 140679280 is about 11860.8296505767. The cubic root of 140679280 is about 520.0878549784.

The spelling of 140679280 in words is "one hundred forty million, six hundred seventy-nine thousand, two hundred eighty".