28471552 has 18 divisors (see below), whose sum is σ = 56832398. Its totient is φ = 14235648.

The previous prime is 28471543. The next prime is 28471559. The reversal of 28471552 is 25517482.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 26873856 + 1597696 = 5184^2 + 1264^2 .

It is not an unprimeable number, because it can be changed into a prime (28471559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55353 + ... + 55864.

Almost surely, 2^28471552 is an apocalyptic number.

It is an amenable number.

28471552 is a deficient number, since it is larger than the sum of its proper divisors (28360846).

28471552 is an equidigital number, since it uses as much as digits as its factorization.

28471552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111233 (or 111219 counting only the distinct ones).

The product of its digits is 22400, while the sum is 34.

The square root of 28471552 is about 5335.8740614823. The cubic root of 28471552 is about 305.3540705751.

The spelling of 28471552 in words is "twenty-eight million, four hundred seventy-one thousand, five hundred fifty-two".