140256536 has 16 divisors (see below), whose sum is σ = 300549840. Its totient is φ = 60109920.

The previous prime is 140256533. The next prime is 140256539. The reversal of 140256536 is 635652041.

It is an interprime number because it is at equal distance from previous prime (140256533) and next prime (140256539).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140256533) 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, 1252235 + ... + 1252346.

It is an arithmetic number, because the mean of its divisors is an integer number (18784365).

Almost surely, 2^140256536 is an apocalyptic number.

It is an amenable number.

140256536 is an abundant number, since it is smaller than the sum of its proper divisors (160293304).

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

140256536 is a wasteful number, since it uses less digits than its factorization.

140256536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2504594 (or 2504590 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 140256536 is about 11842.9952292484. The cubic root of 140256536 is about 519.5663742020.

The spelling of 140256536 in words is "one hundred forty million, two hundred fifty-six thousand, five hundred thirty-six".