140780640 has 384 divisors, whose sum is σ = 597445632. Its totient is φ = 26910720.

The previous prime is 140780639. The next prime is 140780669. The reversal of 140780640 is 46087041.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 140780598 and 140780607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 480334 + ... + 480626.

It is an arithmetic number, because the mean of its divisors is an integer number (1555848).

Almost surely, 2^140780640 is an apocalyptic number.

140780640 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 140780640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (298722816).

140780640 is an abundant number, since it is smaller than the sum of its proper divisors (456664992).

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

140780640 is a wasteful number, since it uses less digits than its factorization.

140780640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342 (or 334 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 140780640 is about 11865.1017694751. The cubic root of 140780640 is about 520.2127334711.

The spelling of 140780640 in words is "one hundred forty million, seven hundred eighty thousand, six hundred forty".