30530400000 has 216 divisors, whose sum is σ = 101570717808. Its totient is φ = 8140800000.

The previous prime is 30530399969. The next prime is 30530400007. The reversal of 30530400000 is 403503.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30530400007) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2393640 + ... + 2406360.

Almost surely, 2^30530400000 is an apocalyptic number.

30530400000 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30530400000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50785358904).

30530400000 is an abundant number, since it is smaller than the sum of its proper divisors (71040317808).

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

30530400000 is an frugal number, since it uses more digits than its factorization.

30530400000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12765 (or 12731 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 15.

Adding to 30530400000 its reverse (403503), we get a palindrome (30530803503).

The spelling of 30530400000 in words is "thirty billion, five hundred thirty million, four hundred thousand".