29994789888 has 440 divisors, whose sum is σ = 107793382400. Its totient is φ = 8115904512.

The previous prime is 29994789841. The next prime is 29994789967. The reversal of 29994789888 is 88898749992.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 11030193 + ... + 11032911.

It is an arithmetic number, because the mean of its divisors is an integer number (244984960).

Almost surely, 2^29994789888 is an apocalyptic number.

29994789888 is a gapful number since it is divisible by the number (28) 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 29994789888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53896691200).

29994789888 is an abundant number, since it is smaller than the sum of its proper divisors (77798592512).

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

29994789888 is a wasteful number, since it uses less digits than its factorization.

29994789888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2777 (or 2750 counting only the distinct ones).

The product of its digits is 1504935936, while the sum is 81.

The spelling of 29994789888 in words is "twenty-nine billion, nine hundred ninety-four million, seven hundred eighty-nine thousand, eight hundred eighty-eight".