28242188451 has 48 divisors (see below), whose sum is σ = 45308989440. Its totient is φ = 16860983040.

The previous prime is 28242188419. The next prime is 28242188521. The reversal of 28242188451 is 15488124282.

It is a happy number.

28242188451 is a `hidden beast` number, since 2 + 82 + 42 + 1 + 88 + 451 = 666.

It is not a de Polignac number, because 28242188451 - 2⁵ = 28242188419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28242188397 and 28242188406.

It is not an unprimeable number, because it can be changed into a prime (28242188651) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 651120 + ... + 693138.

It is an arithmetic number, because the mean of its divisors is an integer number (943937280).

Almost surely, 2^28242188451 is an apocalyptic number.

28242188451 is a deficient number, since it is larger than the sum of its proper divisors (17066800989).

28242188451 is a wasteful number, since it uses less digits than its factorization.

28242188451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42256 (or 42253 counting only the distinct ones).

The product of its digits is 327680, while the sum is 45.

The spelling of 28242188451 in words is "twenty-eight billion, two hundred forty-two million, one hundred eighty-eight thousand, four hundred fifty-one".