1023555260 has 72 divisors (see below), whose sum is σ = 2660093856. Its totient is φ = 323930880.

The previous prime is 1023555233. The next prime is 1023555271. The reversal of 1023555260 is 625553201.

It is a happy number.

1023555260 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2030 + ... + 45290.

It is an arithmetic number, because the mean of its divisors is an integer number (36945748).

Almost surely, 2^1023555260 is an apocalyptic number.

1023555260 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 1023555260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1330046928).

1023555260 is an abundant number, since it is smaller than the sum of its proper divisors (1636538596).

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

1023555260 is a wasteful number, since it uses less digits than its factorization.

1023555260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43303 (or 43288 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 1023555260 is about 31993.0501828131. The cubic root of 1023555260 is about 1007.7908976168.

The spelling of 1023555260 in words is "one billion, twenty-three million, five hundred fifty-five thousand, two hundred sixty".