20466634 has 16 divisors (see below), whose sum is σ = 32785920. Its totient is φ = 9560880.

The previous prime is 20466631. The next prime is 20466637. The reversal of 20466634 is 43666402.

It is an interprime number because it is at equal distance from previous prime (20466631) and next prime (20466637).

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a junction number, because it is equal to n+sod(n) for n = 20466596 and 20466605.

It is not an unprimeable number, because it can be changed into a prime (20466631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3894 + ... + 7489.

It is an arithmetic number, because the mean of its divisors is an integer number (2049120).

Almost surely, 2^20466634 is an apocalyptic number.

20466634 is a deficient number, since it is larger than the sum of its proper divisors (12319286).

20466634 is a wasteful number, since it uses less digits than its factorization.

20466634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11445.

The product of its (nonzero) digits is 20736, while the sum is 31.

The square root of 20466634 is about 4524.0064102519. The cubic root of 20466634 is about 273.5366188838.

The spelling of 20466634 in words is "twenty million, four hundred sixty-six thousand, six hundred thirty-four".