20152234420 has 48 divisors (see below), whose sum is σ = 42782580288. Its totient is φ = 7973199360.

The previous prime is 20152234409. The next prime is 20152234441. The reversal of 20152234420 is 2443225102.

It is a super-2 number, since 2×20152234420² (a number of 21 digits) contains 22 as substring.

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, 673212 + ... + 702508.

It is an arithmetic number, because the mean of its divisors is an integer number (891303756).

Almost surely, 2^20152234420 is an apocalyptic number.

20152234420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20152234420 is an abundant number, since it is smaller than the sum of its proper divisors (22630345868).

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

20152234420 is a wasteful number, since it uses less digits than its factorization.

20152234420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29680 (or 29678 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

Adding to 20152234420 its reverse (2443225102), we get a palindrome (22595459522).

The spelling of 20152234420 in words is "twenty billion, one hundred fifty-two million, two hundred thirty-four thousand, four hundred twenty".