28701472 has 12 divisors (see below), whose sum is σ = 56506086. Its totient is φ = 14350720.

The previous prime is 28701469. The next prime is 28701479. The reversal of 28701472 is 27410782.

It can be written as a sum of positive squares in only one way, i.e., 26255376 + 2446096 = 5124^2 + 1564^2 .

It is not an unprimeable number, because it can be changed into a prime (28701479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 448429 + ... + 448492.

Almost surely, 2^28701472 is an apocalyptic number.

It is an amenable number.

28701472 is a deficient number, since it is larger than the sum of its proper divisors (27804614).

28701472 is an equidigital number, since it uses as much as digits as its factorization.

28701472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 896931 (or 896923 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 31.

The square root of 28701472 is about 5357.3754768543. The cubic root of 28701472 is about 306.1738229524.

The spelling of 28701472 in words is "twenty-eight million, seven hundred one thousand, four hundred seventy-two".