20830626 has 12 divisors (see below), whose sum is σ = 45133062. Its totient is φ = 6943536.

The previous prime is 20830609. The next prime is 20830633. The reversal of 20830626 is 62603802.

20830626 is a `hidden beast` number, since 2 + 0 + 8 + 30 + 626 = 666.

It can be written as a sum of positive squares in only one way, i.e., 20711601 + 119025 = 4551^2 + 345^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20830626.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 578611 + ... + 578646.

Almost surely, 2^20830626 is an apocalyptic number.

20830626 is an abundant number, since it is smaller than the sum of its proper divisors (24302436).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20830626 is a wasteful number, since it uses less digits than its factorization.

20830626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1157265 (or 1157262 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 20830626 is about 4564.0580627332. The cubic root of 20830626 is about 275.1486843346.

The spelling of 20830626 in words is "twenty million, eight hundred thirty thousand, six hundred twenty-six".