1023540000 has 240 divisors, whose sum is σ = 3838621248. Its totient is φ = 233856000.

The previous prime is 1023539999. The next prime is 1023540041. The reversal of 1023540000 is 453201.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 418782 + ... + 421218.

Almost surely, 2^1023540000 is an apocalyptic number.

1023540000 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 1023540000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1919310624).

1023540000 is an abundant number, since it is smaller than the sum of its proper divisors (2815081248).

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

1023540000 is an equidigital number, since it uses as much as digits as its factorization.

1023540000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2477 (or 2454 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 1023540000 is about 31992.8116926287. The cubic root of 1023540000 is about 1007.7858892679.

Adding to 1023540000 its reverse (453201), we get a palindrome (1023993201).

The spelling of 1023540000 in words is "one billion, twenty-three million, five hundred forty thousand".