20553726 has 8 divisors (see below), whose sum is σ = 41107464. Its totient is φ = 6851240.

The previous prime is 20553707. The next prime is 20553727. The reversal of 20553726 is 62735502.

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

20553726 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 20553693 and 20553702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20553727) 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, 1712805 + ... + 1712816.

It is an arithmetic number, because the mean of its divisors is an integer number (5138433).

Almost surely, 2^20553726 is an apocalyptic number.

20553726 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20553726 is a wasteful number, since it uses less digits than its factorization.

20553726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3425626.

The product of its (nonzero) digits is 12600, while the sum is 30.

The square root of 20553726 is about 4533.6217310226. The cubic root of 20553726 is about 273.9240647728.

It can be divided in two parts, 2055372 and 6, that added together give a triangular number (2055378 = T₂₀₂₇).

The spelling of 20553726 in words is "twenty million, five hundred fifty-three thousand, seven hundred twenty-six".