28979264029 has 4 divisors (see below), whose sum is σ = 28999544860. Its totient is φ = 28958983200.

The previous prime is 28979263967. The next prime is 28979264057. The reversal of 28979264029 is 92046297982.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1256348025 + 27722916004 = 35445^2 + 166502^2 .

It is a cyclic number.

It is not a de Polignac number, because 28979264029 - 2¹¹ = 28979261981 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 (28979264059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10138272 + ... + 10141129.

It is an arithmetic number, because the mean of its divisors is an integer number (7249886215).

Almost surely, 2^28979264029 is an apocalyptic number.

It is an amenable number.

28979264029 is a deficient number, since it is larger than the sum of its proper divisors (20280831).

28979264029 is a wasteful number, since it uses less digits than its factorization.

28979264029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20280830.

The product of its (nonzero) digits is 7838208, while the sum is 58.

The spelling of 28979264029 in words is "twenty-eight billion, nine hundred seventy-nine million, two hundred sixty-four thousand, twenty-nine".