28103148 has 36 divisors (see below), whose sum is σ = 74129328. Its totient is φ = 8960160.

The previous prime is 28103111. The next prime is 28103177. The reversal of 28103148 is 84130182.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-3 number, since 3×28103148³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16143 + ... + 17798.

It is an arithmetic number, because the mean of its divisors is an integer number (2059148).

Almost surely, 2^28103148 is an apocalyptic number.

It is an amenable number.

28103148 is an abundant number, since it is smaller than the sum of its proper divisors (46026180).

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

28103148 is a wasteful number, since it uses less digits than its factorization.

28103148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33974 (or 33969 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 28103148 is about 5301.2402322475. The cubic root of 28103148 is about 304.0313189109.

The spelling of 28103148 in words is "twenty-eight million, one hundred three thousand, one hundred forty-eight".