140820784 has 40 divisors (see below), whose sum is σ = 297168480. Its totient is φ = 64255488.

The previous prime is 140820769. The next prime is 140820791. The reversal of 140820784 is 487028041.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14709 + ... + 22315.

It is an arithmetic number, because the mean of its divisors is an integer number (7429212).

Almost surely, 2^140820784 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140820784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148584240).

140820784 is an abundant number, since it is smaller than the sum of its proper divisors (156347696).

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

140820784 is a wasteful number, since it uses less digits than its factorization.

140820784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7717 (or 7711 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 34.

The square root of 140820784 is about 11866.7933326573. The cubic root of 140820784 is about 520.2621754855.

The spelling of 140820784 in words is "one hundred forty million, eight hundred twenty thousand, seven hundred eighty-four".