28945590145 has 8 divisors (see below), whose sum is σ = 35042095656. Its totient is φ = 22951547136.

The previous prime is 28945590133. The next prime is 28945590161. The reversal of 28945590145 is 54109554982.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 519292944 + 28426297201 = 22788^2 + 168601^2 .

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 28945590145 - 2¹¹ = 28945588097 is a prime.

It is a super-2 number, since 2×28945590145² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28945590092 and 28945590101.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25615002 + ... + 25616131.

It is an arithmetic number, because the mean of its divisors is an integer number (4380261957).

Almost surely, 2^28945590145 is an apocalyptic number.

It is an amenable number.

28945590145 is a deficient number, since it is larger than the sum of its proper divisors (6096505511).

28945590145 is a wasteful number, since it uses less digits than its factorization.

28945590145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51231251.

The product of its (nonzero) digits is 2592000, while the sum is 52.

The spelling of 28945590145 in words is "twenty-eight billion, nine hundred forty-five million, five hundred ninety thousand, one hundred forty-five".