1200323864 has 8 divisors (see below), whose sum is σ = 2250607260. Its totient is φ = 600161928.

The previous prime is 1200323857. The next prime is 1200323869. The reversal of 1200323864 is 4683230021.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-4 number, since 4×1200323864⁴ (a number of 37 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200323869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75020234 + ... + 75020249.

Almost surely, 2^1200323864 is an apocalyptic number.

It is an amenable number.

1200323864 is a deficient number, since it is larger than the sum of its proper divisors (1050283396).

1200323864 is a wasteful number, since it uses less digits than its factorization.

1200323864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150040489 (or 150040485 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 1200323864 is about 34645.6904102083. The cubic root of 1200323864 is about 1062.7541597099.

Adding to 1200323864 its reverse (4683230021), we get a palindrome (5883553885).

The spelling of 1200323864 in words is "one billion, two hundred million, three hundred twenty-three thousand, eight hundred sixty-four".