30029139840 has 512 divisors, whose sum is σ = 112227287040. Its totient is φ = 6688604160.

The previous prime is 30029139821. The next prime is 30029139851. The reversal of 30029139840 is 4893192003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 124602120 + ... + 124602360.

It is an arithmetic number, because the mean of its divisors is an integer number (219193920).

Almost surely, 2^30029139840 is an apocalyptic number.

30029139840 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 30029139840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56113643520).

30029139840 is an abundant number, since it is smaller than the sum of its proper divisors (82198147200).

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

30029139840 is a wasteful number, since it uses less digits than its factorization.

30029139840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470 (or 458 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 39.

The spelling of 30029139840 in words is "thirty billion, twenty-nine million, one hundred thirty-nine thousand, eight hundred forty".