20960436 has 72 divisors (see below), whose sum is σ = 58285920. Its totient is φ = 5842368.

The previous prime is 20960431. The next prime is 20960437. The reversal of 20960436 is 63406902.

20960436 = T₃₆₁ + T₃₆₂ + ... + T₅₅₆.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20960431) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24870 + ... + 25698.

Almost surely, 2^20960436 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20960436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29142960).

20960436 is an abundant number, since it is smaller than the sum of its proper divisors (37325484).

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

20960436 is a wasteful number, since it uses less digits than its factorization.

20960436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 893 (or 884 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 20960436 is about 4578.2568735273. The cubic root of 20960436 is about 275.7190482783.

The spelling of 20960436 in words is "twenty million, nine hundred sixty thousand, four hundred thirty-six".