28727421526 has 16 divisors (see below), whose sum is σ = 46585010160. Its totient is φ = 13239948960.

The previous prime is 28727421523. The next prime is 28727421529. The reversal of 28727421526 is 62512472782.

It is an interprime number because it is at equal distance from previous prime (28727421523) and next prime (28727421529).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28727421523) 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, 10214605 + ... + 10217416.

It is an arithmetic number, because the mean of its divisors is an integer number (2911563135).

Almost surely, 2^28727421526 is an apocalyptic number.

28727421526 is a deficient number, since it is larger than the sum of its proper divisors (17857588634).

28727421526 is a wasteful number, since it uses less digits than its factorization.

28727421526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20432079.

The product of its digits is 752640, while the sum is 46.

The spelling of 28727421526 in words is "twenty-eight billion, seven hundred twenty-seven million, four hundred twenty-one thousand, five hundred twenty-six".