28521950 has 48 divisors (see below), whose sum is σ = 55442880. Its totient is φ = 10907520.

The previous prime is 28521947. The next prime is 28521959. The reversal of 28521950 is 5912582.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28521959) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 124436 + ... + 124664.

It is an arithmetic number, because the mean of its divisors is an integer number (1155060).

Almost surely, 2^28521950 is an apocalyptic number.

28521950 is a deficient number, since it is larger than the sum of its proper divisors (26920930).

28521950 is a wasteful number, since it uses less digits than its factorization.

28521950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341 (or 336 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 28521950 is about 5340.5945361916. The cubic root of 28521950 is about 305.5341352600.

The spelling of 28521950 in words is "twenty-eight million, five hundred twenty-one thousand, nine hundred fifty".