28953372783 has 8 divisors (see below), whose sum is σ = 38965287168. Its totient is φ = 19121853464.

The previous prime is 28953372781. The next prime is 28953372829. The reversal of 28953372783 is 38727335982.

It is a happy number.

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 28953372783 - 2¹ = 28953372781 is a prime.

It is a super-2 number, since 2×28953372783² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28953372781) 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, 45098391 + ... + 45099032.

It is an arithmetic number, because the mean of its divisors is an integer number (4870660896).

Almost surely, 2^28953372783 is an apocalyptic number.

28953372783 is a deficient number, since it is larger than the sum of its proper divisors (10011914385).

28953372783 is a wasteful number, since it uses less digits than its factorization.

28953372783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90197533.

The product of its digits is 15240960, while the sum is 57.

The spelling of 28953372783 in words is "twenty-eight billion, nine hundred fifty-three million, three hundred seventy-two thousand, seven hundred eighty-three".