28428314544 has 60 divisors (see below), whose sum is σ = 90925485456. Its totient is φ = 8122375296.

The previous prime is 28428314531. The next prime is 28428314567. The reversal of 28428314544 is 44541382482.

28428314544 is a `hidden beast` number, since 2 + 84 + 28 + 3 + 1 + 4 + 544 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 28428314544.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14100339 + ... + 14102354.

Almost surely, 2^28428314544 is an apocalyptic number.

28428314544 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28428314544 is an abundant number, since it is smaller than the sum of its proper divisors (62497170912).

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

28428314544 is a wasteful number, since it uses less digits than its factorization.

28428314544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28202714 (or 28202705 counting only the distinct ones).

The product of its digits is 983040, while the sum is 45.

The spelling of 28428314544 in words is "twenty-eight billion, four hundred twenty-eight million, three hundred fourteen thousand, five hundred forty-four".