20929703 has 8 divisors (see below), whose sum is σ = 22377888. Its totient is φ = 19505664.

The previous prime is 20929693. The next prime is 20929729. The reversal of 20929703 is 30792902.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20929703 - 2¹⁰ = 20928679 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20929703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20920703) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4226 + ... + 7727.

It is an arithmetic number, because the mean of its divisors is an integer number (2797236).

Almost surely, 2^20929703 is an apocalyptic number.

20929703 is a deficient number, since it is larger than the sum of its proper divisors (1448185).

20929703 is a wasteful number, since it uses less digits than its factorization.

20929703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12073.

The product of its (nonzero) digits is 6804, while the sum is 32.

The square root of 20929703 is about 4574.8992338630. The cubic root of 20929703 is about 275.5842257271.

The spelling of 20929703 in words is "twenty million, nine hundred twenty-nine thousand, seven hundred three".