20692906 has 16 divisors (see below), whose sum is σ = 33755904. Its totient is φ = 9456624.

The previous prime is 20692901. The next prime is 20692967. The reversal of 20692906 is 60929602.

It is not an unprimeable number, because it can be changed into a prime (20692901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1186 + ... + 6541.

It is an arithmetic number, because the mean of its divisors is an integer number (2109744).

Almost surely, 2^20692906 is an apocalyptic number.

20692906 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20692906 is a deficient number, since it is larger than the sum of its proper divisors (13062998).

20692906 is a wasteful number, since it uses less digits than its factorization.

20692906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7845.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 20692906 is about 4548.9455921125. The cubic root of 20692906 is about 274.5409686442.

The spelling of 20692906 in words is "twenty million, six hundred ninety-two thousand, nine hundred six".