28173552 has 40 divisors (see below), whose sum is σ = 79399680. Its totient is φ = 8537280.

The previous prime is 28173527. The next prime is 28173577. The reversal of 28173552 is 25537182.

It is an interprime number because it is at equal distance from previous prime (28173527) and next prime (28173577).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26152 + ... + 27207.

It is an arithmetic number, because the mean of its divisors is an integer number (1984992).

Almost surely, 2^28173552 is an apocalyptic number.

28173552 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

28173552 is an abundant number, since it is smaller than the sum of its proper divisors (51226128).

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

28173552 is a wasteful number, since it uses less digits than its factorization.

28173552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53381 (or 53375 counting only the distinct ones).

The product of its digits is 16800, while the sum is 33.

The square root of 28173552 is about 5307.8764115228. The cubic root of 28173552 is about 304.2849935905.

The spelling of 28173552 in words is "twenty-eight million, one hundred seventy-three thousand, five hundred fifty-two".