28711950 has 24 divisors (see below), whose sum is σ = 71206008. Its totient is φ = 7656480.

The previous prime is 28711909. The next prime is 28711957. The reversal of 28711950 is 5911782.

It is a super-3 number, since 3×28711950³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28711957) 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, 95557 + ... + 95856.

It is an arithmetic number, because the mean of its divisors is an integer number (2966917).

Almost surely, 2^28711950 is an apocalyptic number.

28711950 is an abundant number, since it is smaller than the sum of its proper divisors (42494058).

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

28711950 is a wasteful number, since it uses less digits than its factorization.

28711950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191428 (or 191423 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 33.

The square root of 28711950 is about 5358.3532918239. The cubic root of 28711950 is about 306.2110765470.

The spelling of 28711950 in words is "twenty-eight million, seven hundred eleven thousand, nine hundred fifty".