28030550 has 24 divisors (see below), whose sum is σ = 52731000. Its totient is φ = 11084480.

The previous prime is 28030547. The next prime is 28030553. The reversal of 28030550 is 5503082.

It is an interprime number because it is at equal distance from previous prime (28030547) and next prime (28030553).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28030553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1301 + ... + 7599.

It is an arithmetic number, because the mean of its divisors is an integer number (2197125).

Almost surely, 2^28030550 is an apocalyptic number.

28030550 is a deficient number, since it is larger than the sum of its proper divisors (24700450).

28030550 is a wasteful number, since it uses less digits than its factorization.

28030550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6400 (or 6395 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 28030550 is about 5294.3885388211. The cubic root of 28030550 is about 303.7692948956.

The spelling of 28030550 in words is "twenty-eight million, thirty thousand, five hundred fifty".