28774265 has 32 divisors (see below), whose sum is σ = 40884480. Its totient is φ = 19236096.

The previous prime is 28774259. The next prime is 28774297. The reversal of 28774265 is 56247782.

It is not a de Polignac number, because 28774265 - 2⁶ = 28774201 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27899 + ... + 28911.

It is an arithmetic number, because the mean of its divisors is an integer number (1277640).

Almost surely, 2^28774265 is an apocalyptic number.

It is an amenable number.

28774265 is a deficient number, since it is larger than the sum of its proper divisors (12110215).

28774265 is a wasteful number, since it uses less digits than its factorization.

28774265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1073.

The product of its digits is 188160, while the sum is 41.

The square root of 28774265 is about 5364.1648930658. The cubic root of 28774265 is about 306.4324449471.

The spelling of 28774265 in words is "twenty-eight million, seven hundred seventy-four thousand, two hundred sixty-five".