28702638216 has 96 divisors (see below), whose sum is σ = 92704210560. Its totient is φ = 7844196096.

The previous prime is 28702638199. The next prime is 28702638259. The reversal of 28702638216 is 61283620782.

28702638216 is a `hidden beast` number, since 2 + 8 + 7 + 0 + 2 + 638 + 2 + 1 + 6 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1226445 + ... + 1249628.

It is an arithmetic number, because the mean of its divisors is an integer number (965668860).

Almost surely, 2^28702638216 is an apocalyptic number.

It is an amenable number.

28702638216 is an abundant number, since it is smaller than the sum of its proper divisors (64001572344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28702638216 is a wasteful number, since it uses less digits than its factorization.

28702638216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2476115 (or 2476108 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The spelling of 28702638216 in words is "twenty-eight billion, seven hundred two million, six hundred thirty-eight thousand, two hundred sixteen".