985641240 has 32 divisors (see below), whose sum is σ = 2956924080. Its totient is φ = 262837632.

The previous prime is 985641211. The next prime is 985641253. The reversal of 985641240 is 42146589.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4106719 + ... + 4106958.

Almost surely, 2^985641240 is an apocalyptic number.

It is an amenable number.

985641240 is an abundant number, since it is smaller than the sum of its proper divisors (1971282840).

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

985641240 is a wasteful number, since it uses less digits than its factorization.

985641240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8213691 (or 8213687 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 985641240 is about 31394.9237935052. The cubic root of 985641240 is about 995.1906539369.

The spelling of 985641240 in words is "nine hundred eighty-five million, six hundred forty-one thousand, two hundred forty".