1023700400 has 30 divisors (see below), whose sum is σ = 2459441172. Its totient is φ = 409480000.

The previous prime is 1023700397. The next prime is 1023700409. The reversal of 1023700400 is 40073201.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1023700409) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1279226 + ... + 1280025.

Almost surely, 2^1023700400 is an apocalyptic number.

1023700400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1023700400 is an abundant number, since it is smaller than the sum of its proper divisors (1435740772).

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

1023700400 is a wasteful number, since it uses less digits than its factorization.

1023700400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2559269 (or 2559258 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 1023700400 is about 31995.3184075421. The cubic root of 1023700400 is about 1007.8385302373.

Adding to 1023700400 its reverse (40073201), we get a palindrome (1063773601).

The spelling of 1023700400 in words is "one billion, twenty-three million, seven hundred thousand, four hundred".