28972136246 has 4 divisors (see below), whose sum is σ = 43458204372. Its totient is φ = 14486068122.

The previous prime is 28972136203. The next prime is 28972136251. The reversal of 28972136246 is 64263127982.

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

It is a junction number, because it is equal to n+sod(n) for n = 28972136194 and 28972136203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7243034060 + ... + 7243034063.

It is an arithmetic number, because the mean of its divisors is an integer number (10864551093).

Almost surely, 2^28972136246 is an apocalyptic number.

28972136246 is a deficient number, since it is larger than the sum of its proper divisors (14486068126).

28972136246 is a wasteful number, since it uses less digits than its factorization.

28972136246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14486068125.

The product of its digits is 1741824, while the sum is 50.

The spelling of 28972136246 in words is "twenty-eight billion, nine hundred seventy-two million, one hundred thirty-six thousand, two hundred forty-six".