30430336840 has 64 divisors (see below), whose sum is σ = 70948710000. Its totient is φ = 11732582400.

The previous prime is 30430336837. The next prime is 30430336877. The reversal of 30430336840 is 4863303403.

It can be written as a sum of positive squares in 8 ways, for example, as 19076581924 + 11353754916 = 138118^2 + 106554^2 .

It is a super-2 number, since 2×30430336840² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30430336796 and 30430336805.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 675336 + ... + 718984.

Almost surely, 2^30430336840 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30430336840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35474355000).

30430336840 is an abundant number, since it is smaller than the sum of its proper divisors (40518373160).

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

30430336840 is a wasteful number, since it uses less digits than its factorization.

30430336840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44290 (or 44286 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 34.

It can be divided in two parts, 304303 and 36840, that added together give a palindrome (341143).

The spelling of 30430336840 in words is "thirty billion, four hundred thirty million, three hundred thirty-six thousand, eight hundred forty".