28644900450929 has 32 divisors (see below), whose sum is σ = 34194353107200. Its totient is φ = 23973106985856.

The previous prime is 28644900450923. The next prime is 28644900450961. The reversal of 28644900450929 is 92905400944682.

It is not a de Polignac number, because 28644900450929 - 2¹⁶ = 28644900385393 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28644900450923) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40608287 + ... + 41307659.

It is an arithmetic number, because the mean of its divisors is an integer number (1068573534600).

Almost surely, 2^{28644900450929} is an apocalyptic number.

It is an amenable number.

28644900450929 is a deficient number, since it is larger than the sum of its proper divisors (5549452656271).

28644900450929 is an equidigital number, since it uses as much as digits as its factorization.

28644900450929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702214 (or 702200 counting only the distinct ones).

The product of its (nonzero) digits is 44789760, while the sum is 62.

The spelling of 28644900450929 in words is "twenty-eight trillion, six hundred forty-four billion, nine hundred million, four hundred fifty thousand, nine hundred twenty-nine".