20739696 has 40 divisors (see below), whose sum is σ = 53746560. Its totient is φ = 6891456.

The previous prime is 20739689. The next prime is 20739701. The reversal of 20739696 is 69693702.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 23715 + ... + 24573.

It is an arithmetic number, because the mean of its divisors is an integer number (1343664).

Almost surely, 2^20739696 is an apocalyptic number.

It is an amenable number.

20739696 is an abundant number, since it is smaller than the sum of its proper divisors (33006864).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20739696 is a wasteful number, since it uses less digits than its factorization.

20739696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1373 (or 1367 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 42.

The square root of 20739696 is about 4554.0856381935. The cubic root of 20739696 is about 274.7477400203.

It can be divided in two parts, 207 and 39696, that added together give a triangular number (39903 = T₂₈₂).

The spelling of 20739696 in words is "twenty million, seven hundred thirty-nine thousand, six hundred ninety-six".