1520055432 has 96 divisors (see below), whose sum is σ = 4764614400. Its totient is φ = 428792832.

The previous prime is 1520055403. The next prime is 1520055491. The reversal of 1520055432 is 2345500251.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1520055396 and 1520055405.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20728 + ... + 58904.

It is an arithmetic number, because the mean of its divisors is an integer number (49631400).

Almost surely, 2^1520055432 is an apocalyptic number.

1520055432 is a gapful number since it is divisible by the number (12) 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 1520055432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2382307200).

1520055432 is an abundant number, since it is smaller than the sum of its proper divisors (3244558968).

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

1520055432 is a wasteful number, since it uses less digits than its factorization.

1520055432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38275 (or 38268 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 1520055432 is about 38987.8882731548. Note that the first 3 decimals coincide. The cubic root of 1520055432 is about 1149.7933924990.

Adding to 1520055432 its reverse (2345500251), we get a palindrome (3865555683).

The spelling of 1520055432 in words is "one billion, five hundred twenty million, fifty-five thousand, four hundred thirty-two".