140056820 has 24 divisors (see below), whose sum is σ = 301294728. Its totient is φ = 54656000.

The previous prime is 140056789. The next prime is 140056823. The reversal of 140056820 is 28650041.

It can be written as a sum of positive squares in 4 ways, for example, as 4892944 + 135163876 = 2212^2 + 11626^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 140056820.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140056823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84581 + ... + 86220.

It is an arithmetic number, because the mean of its divisors is an integer number (12553947).

Almost surely, 2^140056820 is an apocalyptic number.

140056820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140056820 is an abundant number, since it is smaller than the sum of its proper divisors (161237908).

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

140056820 is a wasteful number, since it uses less digits than its factorization.

140056820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170851 (or 170849 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 140056820 is about 11834.5604058621. The cubic root of 140056820 is about 519.3196477112.

The spelling of 140056820 in words is "one hundred forty million, fifty-six thousand, eight hundred twenty".