201002440 has 32 divisors (see below), whose sum is σ = 456655680. Its totient is φ = 79618752.

The previous prime is 201002437. The next prime is 201002467. The reversal of 201002440 is 44200102.

It is a self number, because there is not a number n which added to its sum of digits gives 201002440.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20274 + ... + 28513.

It is an arithmetic number, because the mean of its divisors is an integer number (14270490).

Almost surely, 2^201002440 is an apocalyptic number.

201002440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201002440 is an abundant number, since it is smaller than the sum of its proper divisors (255653240).

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

201002440 is a wasteful number, since it uses less digits than its factorization.

201002440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48901 (or 48897 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 201002440 is about 14177.5329306618. The cubic root of 201002440 is about 585.7789705621.

Adding to 201002440 its reverse (44200102), we get a palindrome (245202542).

The spelling of 201002440 in words is "two hundred one million, two thousand, four hundred forty".