28406487396 has 96 divisors (see below), whose sum is σ = 81682513920. Its totient is φ = 7501420800.

The previous prime is 28406487371. The next prime is 28406487443. The reversal of 28406487396 is 69378460482.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 151620 + ... + 282491.

It is an arithmetic number, because the mean of its divisors is an integer number (850859520).

Almost surely, 2^28406487396 is an apocalyptic number.

It is an amenable number.

28406487396 is an abundant number, since it is smaller than the sum of its proper divisors (53276026524).

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

28406487396 is a wasteful number, since it uses less digits than its factorization.

28406487396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434185 (or 434183 counting only the distinct ones).

The product of its (nonzero) digits is 13934592, while the sum is 57.

The spelling of 28406487396 in words is "twenty-eight billion, four hundred six million, four hundred eighty-seven thousand, three hundred ninety-six".