29021436828 has 36 divisors (see below), whose sum is σ = 73769590440. Its totient is φ = 9619766496.

The previous prime is 29021436803. The next prime is 29021436833. The reversal of 29021436828 is 82863412092.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2245375 + ... + 2258262.

It is an arithmetic number, because the mean of its divisors is an integer number (2049155290).

Almost surely, 2^29021436828 is an apocalyptic number.

It is an amenable number.

29021436828 is an abundant number, since it is smaller than the sum of its proper divisors (44748153612).

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

29021436828 is a wasteful number, since it uses less digits than its factorization.

29021436828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4503826 (or 4503821 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The spelling of 29021436828 in words is "twenty-nine billion, twenty-one million, four hundred thirty-six thousand, eight hundred twenty-eight".