20496736 has 48 divisors (see below), whose sum is σ = 44982000. Its totient is φ = 9128448.

The previous prime is 20496733. The next prime is 20496739. The reversal of 20496736 is 63769402.

It is an interprime number because it is at equal distance from previous prime (20496733) and next prime (20496739).

It is a junction number, because it is equal to n+sod(n) for n = 20496695 and 20496704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20496733) 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, 11215 + ... + 12913.

It is an arithmetic number, because the mean of its divisors is an integer number (937125).

Almost surely, 2^20496736 is an apocalyptic number.

20496736 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20496736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22491000).

20496736 is an abundant number, since it is smaller than the sum of its proper divisors (24485264).

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

20496736 is a wasteful number, since it uses less digits than its factorization.

20496736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1751 (or 1743 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 37.

The square root of 20496736 is about 4527.3321062188. The cubic root of 20496736 is about 273.6706576285.

The spelling of 20496736 in words is "twenty million, four hundred ninety-six thousand, seven hundred thirty-six".