140256528 has 80 divisors (see below), whose sum is σ = 396938880. Its totient is φ = 42477568.

The previous prime is 140256509. The next prime is 140256533. The reversal of 140256528 is 825652041.

It is a super-2 number, since 2×140256528² = 39343787293229568, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20701 + ... + 26627.

It is an arithmetic number, because the mean of its divisors is an integer number (4961736).

Almost surely, 2^140256528 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 140256528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (198469440).

140256528 is an abundant number, since it is smaller than the sum of its proper divisors (256682352).

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

140256528 is a wasteful number, since it uses less digits than its factorization.

140256528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5984 (or 5978 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 33.

The square root of 140256528 is about 11842.9948914960. The cubic root of 140256528 is about 519.5663643236.

The spelling of 140256528 in words is "one hundred forty million, two hundred fifty-six thousand, five hundred twenty-eight".