28071950 has 12 divisors (see below), whose sum is σ = 52213920. Its totient is φ = 11228760.

The previous prime is 28071941. The next prime is 28071959. The reversal of 28071950 is 5917082.

It is an interprime number because it is at equal distance from previous prime (28071941) and next prime (28071959).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28071959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 280670 + ... + 280769.

It is an arithmetic number, because the mean of its divisors is an integer number (4351160).

Almost surely, 2^28071950 is an apocalyptic number.

28071950 is a deficient number, since it is larger than the sum of its proper divisors (24141970).

28071950 is a wasteful number, since it uses less digits than its factorization.

28071950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561451 (or 561446 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 28071950 is about 5298.2968961733. The cubic root of 28071950 is about 303.9187730239.

The spelling of 28071950 in words is "twenty-eight million, seventy-one thousand, nine hundred fifty".