28222519 has 8 divisors (see below), whose sum is σ = 30436560. Its totient is φ = 26014656.

The previous prime is 28222517. The next prime is 28222529. The reversal of 28222519 is 91522282.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28222519 - 2¹ = 28222517 is a prime.

It is a super-2 number, since 2×28222519² = 1593021157410722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28222511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13272 + ... + 15250.

It is an arithmetic number, because the mean of its divisors is an integer number (3804570).

Almost surely, 2^28222519 is an apocalyptic number.

28222519 is a deficient number, since it is larger than the sum of its proper divisors (2214041).

28222519 is a wasteful number, since it uses less digits than its factorization.

28222519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3089.

The product of its digits is 5760, while the sum is 31.

The square root of 28222519 is about 5312.4870823372. The cubic root of 28222519 is about 304.4611789167.

It can be divided in two parts, 282 and 22519, that added together give a square (22801 = 151²).

The spelling of 28222519 in words is "twenty-eight million, two hundred twenty-two thousand, five hundred nineteen".