20460630 has 32 divisors (see below), whose sum is σ = 50435424. Its totient is φ = 5308416.

The previous prime is 20460623. The next prime is 20460637. The reversal of 20460630 is 3606402.

It is an interprime number because it is at equal distance from previous prime (20460623) and next prime (20460637).

It is a junction number, because it is equal to n+sod(n) for n = 20460597 and 20460606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20460637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8107 + ... + 10326.

It is an arithmetic number, because the mean of its divisors is an integer number (1576107).

Almost surely, 2^20460630 is an apocalyptic number.

20460630 is an abundant number, since it is smaller than the sum of its proper divisors (29974794).

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

20460630 is a wasteful number, since it uses less digits than its factorization.

20460630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18480.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 20460630 is about 4523.3427904593. The cubic root of 20460630 is about 273.5098684424.

The spelling of 20460630 in words is "twenty million, four hundred sixty thousand, six hundred thirty".