24728222401 has 4 divisors (see below), whose sum is σ = 24729448752. Its totient is φ = 24726996052.

The previous prime is 24728222381. The next prime is 24728222411. The reversal of 24728222401 is 10422282742.

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, and also an emirpimes, since its reverse is a distinct semiprime: 10422282742 = 2 ⋅5211141371.

It is a cyclic number.

It is not a de Polignac number, because 24728222401 - 2¹⁹ = 24727698113 is a prime.

It is a super-2 number, since 2×24728222401² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (24728222411) 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, 582415 + ... + 623428.

It is an arithmetic number, because the mean of its divisors is an integer number (6182362188).

Almost surely, 2^24728222401 is an apocalyptic number.

It is an amenable number.

24728222401 is a deficient number, since it is larger than the sum of its proper divisors (1226351).

24728222401 is a wasteful number, since it uses less digits than its factorization.

24728222401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1226350.

The product of its (nonzero) digits is 28672, while the sum is 34.

The spelling of 24728222401 in words is "twenty-four billion, seven hundred twenty-eight million, two hundred twenty-two thousand, four hundred one".