28440050 has 24 divisors (see below), whose sum is σ = 54331716. Its totient is φ = 11067840.

The previous prime is 28440043. The next prime is 28440053. The reversal of 28440050 is 5004482.

It can be written as a sum of positive squares in 6 ways, for example, as 7546009 + 20894041 = 2747^2 + 4571^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 28439998 and 28440025.

It is not an unprimeable number, because it can be changed into a prime (28440053) 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, 5837 + ... + 9536.

Almost surely, 2^28440050 is an apocalyptic number.

28440050 is a deficient number, since it is larger than the sum of its proper divisors (25891666).

28440050 is a wasteful number, since it uses less digits than its factorization.

28440050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15422 (or 15417 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 28440050 is about 5332.9213382535. The cubic root of 28440050 is about 305.2414105906.

The spelling of 28440050 in words is "twenty-eight million, four hundred forty thousand, fifty".