1000023040 has 88 divisors (see below), whose sum is σ = 2414886840. Its totient is φ = 397344768.

The previous prime is 1000022971. The next prime is 1000023041. The reversal of 1000023040 is 403200001.

It can be written as a sum of positive squares in 4 ways, for example, as 97140736 + 902882304 = 9856^2 + 30048^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (1000023041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 885196 + ... + 886324.

Almost surely, 2^1000023040 is an apocalyptic number.

1000023040 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 1000023040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1207443420).

1000023040 is an abundant number, since it is smaller than the sum of its proper divisors (1414863800).

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

1000023040 is a wasteful number, since it uses less digits than its factorization.

1000023040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1327 (or 1309 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 1000023040 is about 31623.1408939719. The cubic root of 1000023040 is about 1000.0076799410.

Adding to 1000023040 its reverse (403200001), we get a palindrome (1403223041).

The spelling of 1000023040 in words is "one billion, twenty-three thousand, forty".