20132736 has 128 divisors (see below), whose sum is σ = 59690400. Its totient is φ = 5971968.

The previous prime is 20132713. The next prime is 20132803. The reversal of 20132736 is 63723102.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 184650 + ... + 184758.

Almost surely, 2^20132736 is an apocalyptic number.

20132736 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 20132736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29845200).

20132736 is an abundant number, since it is smaller than the sum of its proper divisors (39557664).

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

20132736 is a wasteful number, since it uses less digits than its factorization.

20132736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176 (or 164 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 24.

The square root of 20132736 is about 4486.9517492391. The cubic root of 20132736 is about 272.0409396278.

Adding to 20132736 its reverse (63723102), we get a palindrome (83855838).

The spelling of 20132736 in words is "twenty million, one hundred thirty-two thousand, seven hundred thirty-six".