1345432020 has 96 divisors (see below), whose sum is σ = 4011638400. Its totient is φ = 335745024.

The previous prime is 1345432007. The next prime is 1345432057. The reversal of 1345432020 is 202345431.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 178896 + ... + 186264.

It is an arithmetic number, because the mean of its divisors is an integer number (41787900).

Almost surely, 2^1345432020 is an apocalyptic number.

1345432020 is a gapful number since it is divisible by the number (10) 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 1345432020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2005819200).

1345432020 is an abundant number, since it is smaller than the sum of its proper divisors (2666206380).

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

1345432020 is a wasteful number, since it uses less digits than its factorization.

1345432020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7577 (or 7575 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 1345432020 is about 36680.1311338986. The cubic root of 1345432020 is about 1103.9614793060.

Adding to 1345432020 its reverse (202345431), we get a palindrome (1547777451).

The spelling of 1345432020 in words is "one billion, three hundred forty-five million, four hundred thirty-two thousand, twenty".