30451004240 has 20 divisors (see below), whose sum is σ = 70798585044. Its totient is φ = 12180401664.

The previous prime is 30451004239. The next prime is 30451004257. The reversal of 30451004240 is 4240015403.

It can be written as a sum of positive squares in 2 ways, for example, as 15517186624 + 14933817616 = 124568^2 + 122204^2 .

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

It is a congruent number.

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, 190318697 + ... + 190318856.

Almost surely, 2^30451004240 is an apocalyptic number.

It is an amenable number.

30451004240 is an abundant number, since it is smaller than the sum of its proper divisors (40347580804).

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

30451004240 is a wasteful number, since it uses less digits than its factorization.

30451004240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380637566 (or 380637560 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

Adding to 30451004240 its reverse (4240015403), we get a palindrome (34691019643).

The spelling of 30451004240 in words is "thirty billion, four hundred fifty-one million, four thousand, two hundred forty".