1023054440 has 64 divisors (see below), whose sum is σ = 2371496400. Its totient is φ = 396914688.

The previous prime is 1023054391. The next prime is 1023054443. The reversal of 1023054440 is 444503201.

It can be written as a sum of positive squares in 8 ways, for example, as 532963396 + 490091044 = 23086^2 + 22138^2 .

It is not an unprimeable number, because it can be changed into a prime (1023054443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 574832 + ... + 576608.

Almost surely, 2^1023054440 is an apocalyptic number.

1023054440 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 1023054440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1185748200).

1023054440 is an abundant number, since it is smaller than the sum of its proper divisors (1348441960).

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

1023054440 is a wasteful number, since it uses less digits than its factorization.

1023054440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2214 (or 2210 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 1023054440 is about 31985.2222127657. Note that the first 4 decimals coincide. The cubic root of 1023054440 is about 1007.6265019401.

Adding to 1023054440 its reverse (444503201), we get a palindrome (1467557641).

The spelling of 1023054440 in words is "one billion, twenty-three million, fifty-four thousand, four hundred forty".