28063704 has 32 divisors (see below), whose sum is σ = 71352000. Its totient is φ = 9195552.

The previous prime is 28063699. The next prime is 28063709. The reversal of 28063704 is 40736082.

It is an interprime number because it is at equal distance from previous prime (28063699) and next prime (28063709).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28063709) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8494 + ... + 11325.

It is an arithmetic number, because the mean of its divisors is an integer number (2229750).

Almost surely, 2^28063704 is an apocalyptic number.

28063704 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

28063704 is the 2832-nd nonagonal number.

It is an amenable number.

28063704 is an abundant number, since it is smaller than the sum of its proper divisors (43288296).

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

28063704 is a wasteful number, since it uses less digits than its factorization.

28063704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19887 (or 19883 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 28063704 is about 5297.5186644315. The cubic root of 28063704 is about 303.8890118847.

Adding to 28063704 its reverse (40736082), we get a palindrome (68799786).

The spelling of 28063704 in words is "twenty-eight million, sixty-three thousand, seven hundred four".