28153108 has 6 divisors (see below), whose sum is σ = 49267946. Its totient is φ = 14076552.

The previous prime is 28153067. The next prime is 28153121. The reversal of 28153108 is 80135182.

It can be written as a sum of positive squares in only one way, i.e., 15776784 + 12376324 = 3972^2 + 3518^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3519135 + ... + 3519142.

Almost surely, 2^28153108 is an apocalyptic number.

It is an amenable number.

28153108 is a deficient number, since it is larger than the sum of its proper divisors (21114838).

28153108 is a wasteful number, since it uses less digits than its factorization.

28153108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7038281 (or 7038279 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 28153108 is about 5305.9502447724. The cubic root of 28153108 is about 304.2113748089.

The spelling of 28153108 in words is "twenty-eight million, one hundred fifty-three thousand, one hundred eight".