28673963137 has 8 divisors (see below), whose sum is σ = 28995683976. Its totient is φ = 28353871872.

The previous prime is 28673963117. The next prime is 28673963141. The reversal of 28673963137 is 73136937682.

It can be written as a sum of positive squares in 4 ways, for example, as 6760786176 + 21913176961 = 82224^2 + 148031^2 .

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 28673963137 - 2⁷ = 28673963009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28673963117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 371988 + ... + 442405.

It is an arithmetic number, because the mean of its divisors is an integer number (3624460497).

Almost surely, 2^28673963137 is an apocalyptic number.

It is an amenable number.

28673963137 is a deficient number, since it is larger than the sum of its proper divisors (321720839).

28673963137 is a wasteful number, since it uses less digits than its factorization.

28673963137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 814787.

The product of its digits is 6858432, while the sum is 55.

The spelling of 28673963137 in words is "twenty-eight billion, six hundred seventy-three million, nine hundred sixty-three thousand, one hundred thirty-seven".