28743949641 has 16 divisors (see below), whose sum is σ = 41862544128. Its totient is φ = 17398424400.

The previous prime is 28743949627. The next prime is 28743949651. The reversal of 28743949641 is 14694934782.

It is not a de Polignac number, because 28743949641 - 2⁵ = 28743949609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28743949621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 527415 + ... + 579356.

It is an arithmetic number, because the mean of its divisors is an integer number (2616409008).

Almost surely, 2^28743949641 is an apocalyptic number.

It is an amenable number.

28743949641 is a deficient number, since it is larger than the sum of its proper divisors (13118594487).

28743949641 is a wasteful number, since it uses less digits than its factorization.

28743949641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1107572.

The product of its digits is 10450944, while the sum is 57.

The spelling of 28743949641 in words is "twenty-eight billion, seven hundred forty-three million, nine hundred forty-nine thousand, six hundred forty-one".