1023404100 has 72 divisors (see below), whose sum is σ = 2984475648. Its totient is φ = 270748800.

The previous prime is 1023404093. The next prime is 1023404101. The reversal of 1023404100 is 14043201.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1023404100.

It is not an unprimeable number, because it can be changed into a prime (1023404101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24670 + ... + 51530.

Almost surely, 2^1023404100 is an apocalyptic number.

1023404100 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 1023404100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1492237824).

1023404100 is an abundant number, since it is smaller than the sum of its proper divisors (1961071548).

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

1023404100 is a wasteful number, since it uses less digits than its factorization.

1023404100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27005 (or 26998 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 1023404100 is about 31990.6877075189. The cubic root of 1023404100 is about 1007.7412845417.

Adding to 1023404100 its reverse (14043201), we get a palindrome (1037447301).

The spelling of 1023404100 in words is "one billion, twenty-three million, four hundred four thousand, one hundred".