1200210320 has 40 divisors (see below), whose sum is σ = 2791930680. Its totient is φ = 479836160.

The previous prime is 1200210317. The next prime is 1200210379. The reversal of 1200210320 is 230120021.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 91853056 + 1108357264 = 9584^2 + 33292^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 298886 + ... + 302874.

It is an arithmetic number, because the mean of its divisors is an integer number (69798267).

Almost surely, 2^1200210320 is an apocalyptic number.

1200210320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200210320 is an abundant number, since it is smaller than the sum of its proper divisors (1591720360).

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

1200210320 is a wasteful number, since it uses less digits than its factorization.

1200210320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7763 (or 7757 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 1200210320 is about 34644.0517260900. The cubic root of 1200210320 is about 1062.7206484310.

Adding to 1200210320 its reverse (230120021), we get a palindrome (1430330341).

It can be divided in two parts, 12002 and 10320, that added together give a palindrome (22322).

The spelling of 1200210320 in words is "one billion, two hundred million, two hundred ten thousand, three hundred twenty".