28707064 has 8 divisors (see below), whose sum is σ = 53825760. Its totient is φ = 14353528.

The previous prime is 28707061. The next prime is 28707073. The reversal of 28707064 is 46070782.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28707061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1794184 + ... + 1794199.

It is an arithmetic number, because the mean of its divisors is an integer number (6728220).

Almost surely, 2^28707064 is an apocalyptic number.

It is an amenable number.

28707064 is a deficient number, since it is larger than the sum of its proper divisors (25118696).

28707064 is a wasteful number, since it uses less digits than its factorization.

28707064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3588389 (or 3588385 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 28707064 is about 5357.8973487741. The cubic root of 28707064 is about 306.1937059377.

The spelling of 28707064 in words is "twenty-eight million, seven hundred seven thousand, sixty-four".