20502036 has 36 divisors (see below), whose sum is σ = 53499264. Its totient is φ = 6613200.

The previous prime is 20502023. The next prime is 20502049. The reversal of 20502036 is 63020502.

It is an interprime number because it is at equal distance from previous prime (20502023) and next prime (20502049).

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 (18).

It is a congruent number.

It is an unprimeable number.

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, 8070 + ... + 10301.

Almost surely, 2^20502036 is an apocalyptic number.

It is an amenable number.

20502036 is an abundant number, since it is smaller than the sum of its proper divisors (32997228).

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

20502036 is a wasteful number, since it uses less digits than its factorization.

20502036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18412 (or 18407 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 20502036 is about 4527.9174020735. The cubic root of 20502036 is about 273.6942439771.

Adding to 20502036 its reverse (63020502), we get a palindrome (83522538).

The spelling of 20502036 in words is "twenty million, five hundred two thousand, thirty-six".