22578073 has 6 divisors (see below), whose sum is σ = 26264346. Its totient is φ = 19352592.

The previous prime is 22578067. The next prime is 22578079. The reversal of 22578073 is 37087522.

It is an interprime number because it is at equal distance from previous prime (22578067) and next prime (22578079).

It can be written as a sum of positive squares in only one way, i.e., 21603904 + 974169 = 4648^2 + 987^2 .

It is not a de Polignac number, because 22578073 - 2⁹ = 22577561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22578079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 230340 + ... + 230437.

It is an arithmetic number, because the mean of its divisors is an integer number (4377391).

Almost surely, 2^22578073 is an apocalyptic number.

It is an amenable number.

22578073 is a deficient number, since it is larger than the sum of its proper divisors (3686273).

22578073 is an equidigital number, since it uses as much as digits as its factorization.

22578073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460791 (or 460784 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 22578073 is about 4751.6389803940. The cubic root of 22578073 is about 282.6369628499.

The spelling of 22578073 in words is "twenty-two million, five hundred seventy-eight thousand, seventy-three".