20929067 has 4 divisors (see below), whose sum is σ = 20942760. Its totient is φ = 20915376.

The previous prime is 20929063. The next prime is 20929099. The reversal of 20929067 is 76092902.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20929067 - 2² = 20929063 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20929063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4217 + ... + 7722.

It is an arithmetic number, because the mean of its divisors is an integer number (5235690).

Almost surely, 2^20929067 is an apocalyptic number.

20929067 is a deficient number, since it is larger than the sum of its proper divisors (13693).

20929067 is a wasteful number, since it uses less digits than its factorization.

20929067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13692.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 20929067 is about 4574.8297236072. The cubic root of 20929067 is about 275.5814342662.

The spelling of 20929067 in words is "twenty million, nine hundred twenty-nine thousand, sixty-seven".