28478551046 has 96 divisors (see below), whose sum is σ = 49546836864. Its totient is φ = 12254105600.

The previous prime is 28478551039. The next prime is 28478551069. The reversal of 28478551046 is 64015587482.

It is a super-3 number, since 3×28478551046³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 28478550985 and 28478551003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 80675606 + ... + 80675958.

It is an arithmetic number, because the mean of its divisors is an integer number (516112884).

Almost surely, 2^28478551046 is an apocalyptic number.

28478551046 is a deficient number, since it is larger than the sum of its proper divisors (21068285818).

28478551046 is a wasteful number, since it uses less digits than its factorization.

28478551046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638 (or 627 counting only the distinct ones).

The product of its (nonzero) digits is 2150400, while the sum is 50.

The spelling of 28478551046 in words is "twenty-eight billion, four hundred seventy-eight million, five hundred fifty-one thousand, forty-six".