28730291629 has 8 divisors (see below), whose sum is σ = 30987131672. Its totient is φ = 26480139840.

The previous prime is 28730291621. The next prime is 28730291651. The reversal of 28730291629 is 92619203782.

It can be written as a sum of positive squares in 4 ways, for example, as 8140911529 + 20589380100 = 90227^2 + 143490^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28730291629 - 2³ = 28730291621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28730291621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1663134 + ... + 1680319.

It is an arithmetic number, because the mean of its divisors is an integer number (3873391459).

Almost surely, 2^28730291629 is an apocalyptic number.

It is an amenable number.

28730291629 is a deficient number, since it is larger than the sum of its proper divisors (2256840043).

28730291629 is a wasteful number, since it uses less digits than its factorization.

28730291629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3344127.

The product of its (nonzero) digits is 653184, while the sum is 49.

The spelling of 28730291629 in words is "twenty-eight billion, seven hundred thirty million, two hundred ninety-one thousand, six hundred twenty-nine".