202104003440 has 40 divisors (see below), whose sum is σ = 470019187680. Its totient is φ = 80819686656.

The previous prime is 202104003427. The next prime is 202104003461. The reversal of 202104003440 is 44300401202.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

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, 43844 + ... + 637283.

It is an arithmetic number, because the mean of its divisors is an integer number (11750479692).

Almost surely, 2^202104003440 is an apocalyptic number.

202104003440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202104003440 is an abundant number, since it is smaller than the sum of its proper divisors (267915184240).

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

202104003440 is a wasteful number, since it uses less digits than its factorization.

202104003440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684849 (or 684843 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 202104003440 its reverse (44300401202), we get a palindrome (246404404642).

The spelling of 202104003440 in words is "two hundred two billion, one hundred four million, three thousand, four hundred forty".