20672046 has 48 divisors (see below), whose sum is σ = 46367568. Its totient is φ = 6652800.

The previous prime is 20672039. The next prime is 20672081. The reversal of 20672046 is 64027602.

It is a super-2 number, since 2×20672046² = 854666971652232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73426 + ... + 73706.

It is an arithmetic number, because the mean of its divisors is an integer number (965991).

Almost surely, 2^20672046 is an apocalyptic number.

20672046 is an abundant number, since it is smaller than the sum of its proper divisors (25695522).

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

20672046 is a wasteful number, since it uses less digits than its factorization.

20672046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417 (or 414 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 20672046 is about 4546.6521749525. The cubic root of 20672046 is about 274.4486850040.

Adding to 20672046 its reverse (64027602), we get a palindrome (84699648).

The spelling of 20672046 in words is "twenty million, six hundred seventy-two thousand, forty-six".