284518340240 has 20 divisors (see below), whose sum is σ = 661505141244. Its totient is φ = 113807336064.

The previous prime is 284518340209. The next prime is 284518340251. The reversal of 284518340240 is 42043815482.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 148354388224 + 136163952016 = 385168^2 + 369004^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1778239547 + ... + 1778239706.

Almost surely, 2^284518340240 is an apocalyptic number.

284518340240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

284518340240 is an abundant number, since it is smaller than the sum of its proper divisors (376986801004).

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

284518340240 is a wasteful number, since it uses less digits than its factorization.

284518340240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3556479266 (or 3556479260 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 41.

The spelling of 284518340240 in words is "two hundred eighty-four billion, five hundred eighteen million, three hundred forty thousand, two hundred forty".