28524778253 has 16 divisors (see below), whose sum is σ = 29128507200. Its totient is φ = 27926760576.

The previous prime is 28524778213. The next prime is 28524778307. The reversal of 28524778253 is 35287742582.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 28524778253 - 2²⁴ = 28508001037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28524778195 and 28524778204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28524778213) 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, 10567298 + ... + 10569996.

It is an arithmetic number, because the mean of its divisors is an integer number (1820531700).

Almost surely, 2^28524778253 is an apocalyptic number.

It is an amenable number.

28524778253 is a deficient number, since it is larger than the sum of its proper divisors (603728947).

28524778253 is a wasteful number, since it uses less digits than its factorization.

28524778253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3676.

The product of its digits is 7526400, while the sum is 53.

The spelling of 28524778253 in words is "twenty-eight billion, five hundred twenty-four million, seven hundred seventy-eight thousand, two hundred fifty-three".