28903552 has 16 divisors (see below), whose sum is σ = 57581550. Its totient is φ = 14451712.

The previous prime is 28903531. The next prime is 28903559. The reversal of 28903552 is 25530982.

It can be written as a sum of positive squares in only one way, i.e., 17774656 + 11128896 = 4216^2 + 3336^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is not an unprimeable number, because it can be changed into a prime (28903559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112777 + ... + 113032.

Almost surely, 2^28903552 is an apocalyptic number.

It is an amenable number.

28903552 is a deficient number, since it is larger than the sum of its proper divisors (28677998).

28903552 is an equidigital number, since it uses as much as digits as its factorization.

28903552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225823 (or 225811 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 28903552 is about 5376.2023771432. The cubic root of 28903552 is about 306.8907079481.

The spelling of 28903552 in words is "twenty-eight million, nine hundred three thousand, five hundred fifty-two".