28642064 has 20 divisors (see below), whose sum is σ = 60539280. Its totient is φ = 13019040.

The previous prime is 28642057. The next prime is 28642079. The reversal of 28642064 is 46024682.

It is a happy number.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 28642064.

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, 81194 + ... + 81545.

It is an arithmetic number, because the mean of its divisors is an integer number (3026964).

Almost surely, 2^28642064 is an apocalyptic number.

It is an amenable number.

28642064 is an abundant number, since it is smaller than the sum of its proper divisors (31897216).

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

28642064 is a wasteful number, since it uses less digits than its factorization.

28642064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162758 (or 162752 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 28642064 is about 5351.8280988836. The cubic root of 28642064 is about 305.9624314879.

The spelling of 28642064 in words is "twenty-eight million, six hundred forty-two thousand, sixty-four".