28254762539 has 4 divisors (see below), whose sum is σ = 28327397280. Its totient is φ = 28182127800.

The previous prime is 28254762521. The next prime is 28254762563. The reversal of 28254762539 is 93526745282.

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 28254762539 - 2²⁴ = 28237985323 is a prime.

It is a super-2 number, since 2×28254762539² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28254762589) 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, 36316787 + ... + 36317564.

It is an arithmetic number, because the mean of its divisors is an integer number (7081849320).

Almost surely, 2^28254762539 is an apocalyptic number.

28254762539 is a deficient number, since it is larger than the sum of its proper divisors (72634741).

28254762539 is an equidigital number, since it uses as much as digits as its factorization.

28254762539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72634740.

The product of its digits is 7257600, while the sum is 53.

The spelling of 28254762539 in words is "twenty-eight billion, two hundred fifty-four million, seven hundred sixty-two thousand, five hundred thirty-nine".