28211615148 has 12 divisors (see below), whose sum is σ = 65827102040. Its totient is φ = 9403871712.

The previous prime is 28211615111. The next prime is 28211615177. The reversal of 28211615148 is 84151611282.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1175483953 + ... + 1175483976.

Almost surely, 2^28211615148 is an apocalyptic number.

It is an amenable number.

28211615148 is an abundant number, since it is smaller than the sum of its proper divisors (37615486892).

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

28211615148 is a wasteful number, since it uses less digits than its factorization.

28211615148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2350967936 (or 2350967934 counting only the distinct ones).

The product of its digits is 30720, while the sum is 39.

The spelling of 28211615148 in words is "twenty-eight billion, two hundred eleven million, six hundred fifteen thousand, one hundred forty-eight".