1020278532 has 96 divisors (see below), whose sum is σ = 2941480192. Its totient is φ = 268033536.

The previous prime is 1020278531. The next prime is 1020278599. The reversal of 1020278532 is 2358720201.

It is a self number, because there is not a number n which added to its sum of digits gives 1020278532.

It is not an unprimeable number, because it can be changed into a prime (1020278531) by changing a digit.

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, 300798 + ... + 304170.

Almost surely, 2^1020278532 is an apocalyptic number.

1020278532 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 1020278532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1470740096).

1020278532 is an abundant number, since it is smaller than the sum of its proper divisors (1921201660).

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

1020278532 is a wasteful number, since it uses less digits than its factorization.

1020278532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3677 (or 3675 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 1020278532 is about 31941.7991353023. The cubic root of 1020278532 is about 1006.7143275730.

Adding to 1020278532 its reverse (2358720201), we get a palindrome (3378998733).

The spelling of 1020278532 in words is "one billion, twenty million, two hundred seventy-eight thousand, five hundred thirty-two".