22857145 has 8 divisors (see below), whose sum is σ = 27457920. Its totient is φ = 18266160.

The previous prime is 22857119. The next prime is 22857167. The reversal of 22857145 is 54175822.

It is a happy number.

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

It is not a de Polignac number, because 22857145 - 2⁵ = 22857113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22857145.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4480 + ... + 8110.

It is an arithmetic number, because the mean of its divisors is an integer number (3432240).

Almost surely, 2^22857145 is an apocalyptic number.

It is an amenable number.

22857145 is a deficient number, since it is larger than the sum of its proper divisors (4600775).

22857145 is a wasteful number, since it uses less digits than its factorization.

22857145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4895.

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

The square root of 22857145 is about 4780.9146614429. The cubic root of 22857145 is about 283.7966912627.

The spelling of 22857145 in words is "twenty-two million, eight hundred fifty-seven thousand, one hundred forty-five".