28507441157 has 16 divisors (see below), whose sum is σ = 30998381568. Its totient is φ = 26060313600.

The previous prime is 28507441133. The next prime is 28507441271. The reversal of 28507441157 is 75114470582.

It is a cyclic number.

It is not a de Polignac number, because 28507441157 - 2⁸ = 28507440901 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28507441357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 534032 + ... + 584982.

It is an arithmetic number, because the mean of its divisors is an integer number (1937398848).

Almost surely, 2^28507441157 is an apocalyptic number.

It is an amenable number.

28507441157 is a deficient number, since it is larger than the sum of its proper divisors (2490940411).

28507441157 is a wasteful number, since it uses less digits than its factorization.

28507441157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51380.

The product of its (nonzero) digits is 313600, while the sum is 44.

The spelling of 28507441157 in words is "twenty-eight billion, five hundred seven million, four hundred forty-one thousand, one hundred fifty-seven".