28703912 has 8 divisors (see below), whose sum is σ = 53819850. Its totient is φ = 14351952.

The previous prime is 28703911. The next prime is 28703929. The reversal of 28703912 is 21930782.

It can be written as a sum of positive squares in only one way, i.e., 22221796 + 6482116 = 4714^2 + 2546^2 .

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

It is not an unprimeable number, because it can be changed into a prime (28703911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1793987 + ... + 1794002.

Almost surely, 2^28703912 is an apocalyptic number.

It is an amenable number.

28703912 is a deficient number, since it is larger than the sum of its proper divisors (25115938).

28703912 is a wasteful number, since it uses less digits than its factorization.

28703912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3587995 (or 3587991 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 28703912 is about 5357.6031954597. The cubic root of 28703912 is about 306.1824989645.

The spelling of 28703912 in words is "twenty-eight million, seven hundred three thousand, nine hundred twelve".