20929814 has 8 divisors (see below), whose sum is σ = 31512240. Its totient is φ = 10425736.

The previous prime is 20929813. The next prime is 20929817. The reversal of 20929814 is 41892902.

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

It is a super-2 number, since 2×20929814² = 876114228149192, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20929813) 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, 18914 + ... + 19989.

It is an arithmetic number, because the mean of its divisors is an integer number (3939030).

Almost surely, 2^20929814 is an apocalyptic number.

20929814 is a deficient number, since it is larger than the sum of its proper divisors (10582426).

20929814 is a wasteful number, since it uses less digits than its factorization.

20929814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39174.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 20929814 is about 4574.9113652616. The cubic root of 20929814 is about 275.5847129103.

The spelling of 20929814 in words is "twenty million, nine hundred twenty-nine thousand, eight hundred fourteen".