28280414278 has 8 divisors (see below), whose sum is σ = 42809801760. Its totient is φ = 14010480360.

The previous prime is 28280414273. The next prime is 28280414293. The reversal of 28280414278 is 87241408282.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×28280414278² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28280414273) 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, 64863118 + ... + 64863553.

It is an arithmetic number, because the mean of its divisors is an integer number (5351225220).

Almost surely, 2^28280414278 is an apocalyptic number.

28280414278 is a deficient number, since it is larger than the sum of its proper divisors (14529387482).

28280414278 is a wasteful number, since it uses less digits than its factorization.

28280414278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129726782.

The product of its (nonzero) digits is 458752, while the sum is 46.

The spelling of 28280414278 in words is "twenty-eight billion, two hundred eighty million, four hundred fourteen thousand, two hundred seventy-eight".