20727396 has 36 divisors (see below), whose sum is σ = 52700284. Its totient is φ = 6868800.

The previous prime is 20727391. The next prime is 20727397. The reversal of 20727396 is 69372702.

It can be written as a sum of positive squares in 2 ways, for example, as 746496 + 19980900 = 864^2 + 4470^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 20727396.

It is not an unprimeable number, because it can be changed into a prime (20727391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4926 + ... + 8106.

Almost surely, 2^20727396 is an apocalyptic number.

It is an amenable number.

20727396 is an abundant number, since it is smaller than the sum of its proper divisors (31972888).

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

20727396 is a wasteful number, since it uses less digits than its factorization.

20727396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3372 (or 3367 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 36.

The square root of 20727396 is about 4552.7350021718. The cubic root of 20727396 is about 274.6934148027.

The spelling of 20727396 in words is "twenty million, seven hundred twenty-seven thousand, three hundred ninety-six".