28074511 has 4 divisors (see below), whose sum is σ = 28323072. Its totient is φ = 27825952.

The previous prime is 28074509. The next prime is 28074521. The reversal of 28074511 is 11547082.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11547082 = 2 ⋅5773541.

It is a cyclic number.

It is not a de Polignac number, because 28074511 - 2¹ = 28074509 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28074511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28074521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124111 + ... + 124336.

It is an arithmetic number, because the mean of its divisors is an integer number (7080768).

Almost surely, 2^28074511 is an apocalyptic number.

28074511 is a deficient number, since it is larger than the sum of its proper divisors (248561).

28074511 is a wasteful number, since it uses less digits than its factorization.

28074511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248560.

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 28074511 is about 5298.5385720970. The cubic root of 28074511 is about 303.9280148983.

The spelling of 28074511 in words is "twenty-eight million, seventy-four thousand, five hundred eleven".