28964385237 has 8 divisors (see below), whose sum is σ = 38619977536. Its totient is φ = 19309191552.

The previous prime is 28964385227. The next prime is 28964385257. The reversal of 28964385237 is 73258346982.

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

It is not a de Polignac number, because 28964385237 - 2¹⁹ = 28963860949 is a prime.

It is a super-2 number, since 2×28964385237² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28964385227) 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, 191013 + ... + 307269.

It is an arithmetic number, because the mean of its divisors is an integer number (4827497192).

Almost surely, 2^28964385237 is an apocalyptic number.

It is an amenable number.

28964385237 is a deficient number, since it is larger than the sum of its proper divisors (9655592299).

28964385237 is a wasteful number, since it uses less digits than its factorization.

28964385237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199307.

The product of its digits is 17418240, while the sum is 57.

The spelling of 28964385237 in words is "twenty-eight billion, nine hundred sixty-four million, three hundred eighty-five thousand, two hundred thirty-seven".