28942694437 has 12 divisors (see below), whose sum is σ = 30721716000. Its totient is φ = 27215015432.

The previous prime is 28942694413. The next prime is 28942694453. The reversal of 28942694437 is 73449624982.

It is a happy number.

It is not a de Polignac number, because 28942694437 - 2⁷ = 28942694309 is a prime.

It is a super-2 number, since 2×28942694437² (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 (28942694467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 100687 + ... + 260812.

It is an arithmetic number, because the mean of its divisors is an integer number (2560143000).

Almost surely, 2^28942694437 is an apocalyptic number.

It is an amenable number.

28942694437 is a deficient number, since it is larger than the sum of its proper divisors (1779021563).

28942694437 is an equidigital number, since it uses as much as digits as its factorization.

28942694437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361640 (or 361581 counting only the distinct ones).

The product of its digits is 20901888, while the sum is 58.

The spelling of 28942694437 in words is "twenty-eight billion, nine hundred forty-two million, six hundred ninety-four thousand, four hundred thirty-seven".