29238891020 has 24 divisors (see below), whose sum is σ = 61404911568. Its totient is φ = 11694939200.

The previous prime is 29238890977. The next prime is 29238891037. The reversal of 29238891020 is 2019883292.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 647375 + ... + 691065.

It is an arithmetic number, because the mean of its divisors is an integer number (2558537982).

Almost surely, 2^29238891020 is an apocalyptic number.

29238891020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29238891020 is an abundant number, since it is smaller than the sum of its proper divisors (32166020548).

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

29238891020 is a wasteful number, since it uses less digits than its factorization.

29238891020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77161 (or 77159 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 44.

The spelling of 29238891020 in words is "twenty-nine billion, two hundred thirty-eight million, eight hundred ninety-one thousand, twenty".