1023445400 has 48 divisors (see below), whose sum is σ = 2412141000. Its totient is φ = 403764480.

The previous prime is 1023445399. The next prime is 1023445417. The reversal of 1023445400 is 45443201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20450 + ... + 49649.

Almost surely, 2^1023445400 is an apocalyptic number.

1023445400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1023445400 is an abundant number, since it is smaller than the sum of its proper divisors (1388695600).

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

1023445400 is a wasteful number, since it uses less digits than its factorization.

1023445400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70188 (or 70179 counting only the distinct ones).

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

The square root of 1023445400 is about 31991.3332013531. Note that the first 3 decimals coincide. The cubic root of 1023445400 is about 1007.7548403324.

Adding to 1023445400 its reverse (45443201), we get a palindrome (1068888601).

The spelling of 1023445400 in words is "one billion, twenty-three million, four hundred forty-five thousand, four hundred".