20672212 has 12 divisors (see below), whose sum is σ = 39465216. Its totient is φ = 9396440.

The previous prime is 20672131. The next prime is 20672227. The reversal of 20672212 is 21227602.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 234868 + ... + 234955.

It is an arithmetic number, because the mean of its divisors is an integer number (3288768).

Almost surely, 2^20672212 is an apocalyptic number.

20672212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20672212 is a deficient number, since it is larger than the sum of its proper divisors (18793004).

20672212 is a wasteful number, since it uses less digits than its factorization.

20672212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469838 (or 469836 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 20672212 is about 4546.6704301060. The cubic root of 20672212 is about 274.4494196251.

Adding to 20672212 its reverse (21227602), we get a palindrome (41899814).

The spelling of 20672212 in words is "twenty million, six hundred seventy-two thousand, two hundred twelve".