140284128 has 24 divisors (see below), whose sum is σ = 368246088. Its totient is φ = 46761344.

The previous prime is 140284127. The next prime is 140284139. The reversal of 140284128 is 821482041.

It is a tau number, because it is divible by the number of its divisors (24).

It is a junction number, because it is equal to n+sod(n) for n = 140284095 and 140284104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140284121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 730551 + ... + 730742.

It is an arithmetic number, because the mean of its divisors is an integer number (15343587).

Almost surely, 2^140284128 is an apocalyptic number.

It is an amenable number.

140284128 is an abundant number, since it is smaller than the sum of its proper divisors (227961960).

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

140284128 is a wasteful number, since it uses less digits than its factorization.

140284128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1461306 (or 1461298 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 30.

The square root of 140284128 is about 11844.1600799719. The cubic root of 140284128 is about 519.6004425737.

The spelling of 140284128 in words is "one hundred forty million, two hundred eighty-four thousand, one hundred twenty-eight".