28550383401 has 16 divisors (see below), whose sum is σ = 38227127040. Its totient is φ = 18953705040.

The previous prime is 28550383399. The next prime is 28550383447. The reversal of 28550383401 is 10438305582.

It is not a de Polignac number, because 28550383401 - 2¹ = 28550383399 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28550383401.

It is not an unprimeable number, because it can be changed into a prime (28550383451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1364146 + ... + 1384916.

It is an arithmetic number, because the mean of its divisors is an integer number (2389195440).

Almost surely, 2^28550383401 is an apocalyptic number.

It is an amenable number.

28550383401 is a deficient number, since it is larger than the sum of its proper divisors (9676743639).

28550383401 is a wasteful number, since it uses less digits than its factorization.

28550383401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22676.

The product of its (nonzero) digits is 115200, while the sum is 39.

Adding to 28550383401 its reverse (10438305582), we get a palindrome (38988688983).

The spelling of 28550383401 in words is "twenty-eight billion, five hundred fifty million, three hundred eighty-three thousand, four hundred one".