30429139388 has 48 divisors (see below), whose sum is σ = 57226176000. Its totient is φ = 14115044160.

The previous prime is 30429139387. The next prime is 30429139397. The reversal of 30429139388 is 88393192403.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30429139387) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 785081 + ... + 822927.

It is an arithmetic number, because the mean of its divisors is an integer number (1192212000).

Almost surely, 2^30429139388 is an apocalyptic number.

30429139388 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

30429139388 is a deficient number, since it is larger than the sum of its proper divisors (26797036612).

30429139388 is a wasteful number, since it uses less digits than its factorization.

30429139388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38090 (or 38088 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 50.

The spelling of 30429139388 in words is "thirty billion, four hundred twenty-nine million, one hundred thirty-nine thousand, three hundred eighty-eight".