2628634 has 4 divisors (see below), whose sum is σ = 3942954. Its totient is φ = 1314316.

The previous prime is 2628617. The next prime is 2628649. The reversal of 2628634 is 4368262.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4368262 = 2 ⋅2184131.

It can be written as a sum of positive squares in only one way, i.e., 2265025 + 363609 = 1505^2 + 603^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2628596 and 2628605.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 657157 + ... + 657160.

2^2628634 is an apocalyptic number.

2628634 is a deficient number, since it is larger than the sum of its proper divisors (1314320).

2628634 is a wasteful number, since it uses less digits than its factorization.

2628634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1314319.

The product of its digits is 13824, while the sum is 31.

The square root of 2628634 is about 1621.3062634802. The cubic root of 2628634 is about 138.0098361679.

The spelling of 2628634 in words is "two million, six hundred twenty-eight thousand, six hundred thirty-four".