28519227 has 24 divisors (see below), whose sum is σ = 45147648. Its totient is φ = 17204400.

The previous prime is 28519213. The next prime is 28519229. The reversal of 28519227 is 72291582.

It is not a de Polignac number, because 28519227 - 2¹⁴ = 28502843 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28519191 and 28519200.

It is not an unprimeable number, because it can be changed into a prime (28519229) 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, 26298 + ... + 27360.

It is an arithmetic number, because the mean of its divisors is an integer number (1881152).

Almost surely, 2^28519227 is an apocalyptic number.

28519227 is a deficient number, since it is larger than the sum of its proper divisors (16628421).

28519227 is a wasteful number, since it uses less digits than its factorization.

28519227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1351 (or 1348 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 28519227 is about 5340.3395959433. The cubic root of 28519227 is about 305.5244118022.

The spelling of 28519227 in words is "twenty-eight million, five hundred nineteen thousand, two hundred twenty-seven".