22748155 has 8 divisors (see below), whose sum is σ = 28035792. Its totient is φ = 17706528.

The previous prime is 22748147. The next prime is 22748179. The reversal of 22748155 is 55184722.

It is a happy number.

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 22748155 - 2³ = 22748147 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 22748155.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61297 + ... + 61666.

It is an arithmetic number, because the mean of its divisors is an integer number (3504474).

Almost surely, 2^22748155 is an apocalyptic number.

22748155 is a deficient number, since it is larger than the sum of its proper divisors (5287637).

22748155 is a wasteful number, since it uses less digits than its factorization.

22748155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123005.

The product of its digits is 22400, while the sum is 34.

The square root of 22748155 is about 4769.5025946109. The cubic root of 22748155 is about 283.3448953375.

The spelling of 22748155 in words is "twenty-two million, seven hundred forty-eight thousand, one hundred fifty-five".