2258626 has 4 divisors (see below), whose sum is σ = 3387942. Its totient is φ = 1129312.

The previous prime is 2258621. The next prime is 2258639. The reversal of 2258626 is 6268522.

2258626 is nontrivially palindromic in base 9.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2253001 + 5625 = 1501^2 + 75^2 .

It is not an unprimeable number, because it can be changed into a prime (2258621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564655 + ... + 564658.

2^2258626 is an apocalyptic number.

2258626 is the 951-st centered pentagonal number.

2258626 is a deficient number, since it is larger than the sum of its proper divisors (1129316).

2258626 is a wasteful number, since it uses less digits than its factorization.

2258626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1129315.

The product of its digits is 11520, while the sum is 31.

The square root of 2258626 is about 1502.8725827561. The cubic root of 2258626 is about 131.2043118378.

The spelling of 2258626 in words is "two million, two hundred fifty-eight thousand, six hundred twenty-six".