20672722 has 64 divisors (see below), whose sum is σ = 40550400. Its totient is φ = 7698240.

The previous prime is 20672683. The next prime is 20672747. The reversal of 20672722 is 22727602.

It is a super-2 number, since 2×20672722² = 854722869778568, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 189604 + ... + 189712.

It is an arithmetic number, because the mean of its divisors is an integer number (633600).

Almost surely, 2^20672722 is an apocalyptic number.

20672722 is a deficient number, since it is larger than the sum of its proper divisors (19877678).

20672722 is a wasteful number, since it uses less digits than its factorization.

20672722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191.

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 20672722 is about 4546.7265147576. The cubic root of 20672722 is about 274.4516765687.

The spelling of 20672722 in words is "twenty million, six hundred seventy-two thousand, seven hundred twenty-two".