20436502152 has 192 divisors, whose sum is σ = 59095411200. Its totient is φ = 5877273600.

The previous prime is 20436502147. The next prime is 20436502157. The reversal of 20436502152 is 25120563402.

It is an interprime number because it is at equal distance from previous prime (20436502147) and next prime (20436502157).

It is a super-2 number, since 2×20436502152² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20436502157) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4403049 + ... + 4407687.

It is an arithmetic number, because the mean of its divisors is an integer number (307788600).

Almost surely, 2^20436502152 is an apocalyptic number.

20436502152 is a gapful number since it is divisible by the number (22) 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 20436502152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29547705600).

20436502152 is an abundant number, since it is smaller than the sum of its proper divisors (38658909048).

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

20436502152 is a wasteful number, since it uses less digits than its factorization.

20436502152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4748 (or 4733 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The spelling of 20436502152 in words is "twenty billion, four hundred thirty-six million, five hundred two thousand, one hundred fifty-two".