22939145 has 8 divisors (see below), whose sum is σ = 28476360. Its totient is φ = 17718400.

The previous prime is 22939139. The next prime is 22939183. The reversal of 22939145 is 54193922.

22939145 = 124² + 125² + ... + 413².

It can be written as a sum of positive squares in 4 ways, for example, as 4624 + 22934521 = 68^2 + 4789^2 .

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

It is not a de Polignac number, because 22939145 - 2¹⁰ = 22938121 is a prime.

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, 78956 + ... + 79245.

It is an arithmetic number, because the mean of its divisors is an integer number (3559545).

Almost surely, 2^22939145 is an apocalyptic number.

It is an amenable number.

22939145 is a deficient number, since it is larger than the sum of its proper divisors (5537215).

22939145 is a wasteful number, since it uses less digits than its factorization.

22939145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158235.

The product of its digits is 19440, while the sum is 35.

The square root of 22939145 is about 4789.4827486901. The cubic root of 22939145 is about 284.1356597470.

The spelling of 22939145 in words is "twenty-two million, nine hundred thirty-nine thousand, one hundred forty-five".