28588737487 has 4 divisors (see below), whose sum is σ = 28950620320. Its totient is φ = 28226854656.

The previous prime is 28588737479. The next prime is 28588737533. The reversal of 28588737487 is 78473788582.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28588737487 - 2³ = 28588737479 is a prime.

It is a super-2 number, since 2×28588737487² (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 (28588737587) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180941298 + ... + 180941455.

It is an arithmetic number, because the mean of its divisors is an integer number (7237655080).

Almost surely, 2^28588737487 is an apocalyptic number.

28588737487 is a deficient number, since it is larger than the sum of its proper divisors (361882833).

28588737487 is an equidigital number, since it uses as much as digits as its factorization.

28588737487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361882832.

The product of its digits is 168591360, while the sum is 67.

The spelling of 28588737487 in words is "twenty-eight billion, five hundred eighty-eight million, seven hundred thirty-seven thousand, four hundred eighty-seven".