28050561 has 48 divisors (see below), whose sum is σ = 53509248. Its totient is φ = 13708800.

The previous prime is 28050559. The next prime is 28050563. The reversal of 28050561 is 16505082.

It is an interprime number because it is at equal distance from previous prime (28050559) and next prime (28050563).

It is not a de Polignac number, because 28050561 - 2¹ = 28050559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28050563) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10591 + ... + 12971.

It is an arithmetic number, because the mean of its divisors is an integer number (1114776).

Almost surely, 2^28050561 is an apocalyptic number.

28050561 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

28050561 is a deficient number, since it is larger than the sum of its proper divisors (25458687).

28050561 is a wasteful number, since it uses less digits than its factorization.

28050561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2422 (or 2419 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 28050561 is about 5296.2780327320. The cubic root of 28050561 is about 303.8415646323.

The spelling of 28050561 in words is "twenty-eight million, fifty thousand, five hundred sixty-one".