20502936 has 64 divisors (see below), whose sum is σ = 59443200. Its totient is φ = 6535584.

The previous prime is 20502929. The next prime is 20502943. The reversal of 20502936 is 63920502.

It is an interprime number because it is at equal distance from previous prime (20502929) and next prime (20502943).

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 2905 + ... + 7031.

It is an arithmetic number, because the mean of its divisors is an integer number (928800).

Almost surely, 2^20502936 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 20502936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29721600).

20502936 is an abundant number, since it is smaller than the sum of its proper divisors (38940264).

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

20502936 is a wasteful number, since it uses less digits than its factorization.

20502936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4165 (or 4155 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 20502936 is about 4528.0167844212. The cubic root of 20502936 is about 273.6982488024.

The spelling of 20502936 in words is "twenty million, five hundred two thousand, nine hundred thirty-six".