140616820 has 12 divisors (see below), whose sum is σ = 295295364. Its totient is φ = 56246720.

The previous prime is 140616803. The next prime is 140616821. The reversal of 140616820 is 28616041.

It can be written as a sum of positive squares in 2 ways, for example, as 98962704 + 41654116 = 9948^2 + 6454^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140616821) 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 3 ways as a sum of consecutive naturals, for example, 3515401 + ... + 3515440.

It is an arithmetic number, because the mean of its divisors is an integer number (24607947).

Almost surely, 2^140616820 is an apocalyptic number.

140616820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140616820 is an abundant number, since it is smaller than the sum of its proper divisors (154678544).

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

140616820 is a wasteful number, since it uses less digits than its factorization.

140616820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7030850 (or 7030848 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 140616820 is about 11858.1963215322. The cubic root of 140616820 is about 520.0108725537.

The spelling of 140616820 in words is "one hundred forty million, six hundred sixteen thousand, eight hundred twenty".