28915952741 has 8 divisors (see below), whose sum is σ = 31218701304. Its totient is φ = 26624410560.

The previous prime is 28915952711. The next prime is 28915952761. The reversal of 28915952741 is 14725951982.

It can be written as a sum of positive squares in 4 ways, for example, as 7352205025 + 21563747716 = 85745^2 + 146846^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 28915952741 - 2³⁰ = 27842210917 is a prime.

It is a super-2 number, since 2×28915952741² (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 (28915952711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2796230 + ... + 2806551.

It is an arithmetic number, because the mean of its divisors is an integer number (3902337663).

Almost surely, 2^28915952741 is an apocalyptic number.

It is an amenable number.

28915952741 is a deficient number, since it is larger than the sum of its proper divisors (2302748563).

28915952741 is a wasteful number, since it uses less digits than its factorization.

28915952741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5603191.

The product of its digits is 1814400, while the sum is 53.

The spelling of 28915952741 in words is "twenty-eight billion, nine hundred fifteen million, nine hundred fifty-two thousand, seven hundred forty-one".