28241240101 has 4 divisors (see below), whose sum is σ = 28242623104. Its totient is φ = 28239857100.

The previous prime is 28241240057. The next prime is 28241240107. The reversal of 28241240101 is 10104214282.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28241240101 - 2³¹ = 26093756453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28241240107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 660405 + ... + 701866.

It is an arithmetic number, because the mean of its divisors is an integer number (7060655776).

Almost surely, 2^28241240101 is an apocalyptic number.

It is an amenable number.

28241240101 is a deficient number, since it is larger than the sum of its proper divisors (1383003).

28241240101 is a wasteful number, since it uses less digits than its factorization.

28241240101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1383002.

The product of its (nonzero) digits is 1024, while the sum is 25.

Adding to 28241240101 its reverse (10104214282), we get a palindrome (38345454383).

The spelling of 28241240101 in words is "twenty-eight billion, two hundred forty-one million, two hundred forty thousand, one hundred one".