28948752669 has 8 divisors (see below), whose sum is σ = 38649328480. Its totient is φ = 19273672656.

The previous prime is 28948752647. The next prime is 28948752673. The reversal of 28948752669 is 96625784982.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28948752669 - 2⁷ = 28948752541 is a prime.

It is a super-2 number, since 2×28948752669² (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 (28948752619) 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, 6371299 + ... + 6375840.

It is an arithmetic number, because the mean of its divisors is an integer number (4831166060).

Almost surely, 2^28948752669 is an apocalyptic number.

It is an amenable number.

28948752669 is a deficient number, since it is larger than the sum of its proper divisors (9700575811).

28948752669 is a wasteful number, since it uses less digits than its factorization.

28948752669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12747899.

The product of its digits is 104509440, while the sum is 66.

The spelling of 28948752669 in words is "twenty-eight billion, nine hundred forty-eight million, seven hundred fifty-two thousand, six hundred sixty-nine".