1262400036 has 12 divisors (see below), whose sum is σ = 2945600112. Its totient is φ = 420800008.

The previous prime is 1262400031. The next prime is 1262400043. The reversal of 1262400036 is 6300042621.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 1262399979 and 1262400015.

It is not an unprimeable number, because it can be changed into a prime (1262400031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52599990 + ... + 52600013.

It is an arithmetic number, because the mean of its divisors is an integer number (245466676).

Almost surely, 2^1262400036 is an apocalyptic number.

It is an amenable number.

1262400036 is an abundant number, since it is smaller than the sum of its proper divisors (1683200076).

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

1262400036 is a wasteful number, since it uses less digits than its factorization.

1262400036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105200010 (or 105200008 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 1262400036 is about 35530.2692925342. The cubic root of 1262400036 is about 1080.7676401202.

Adding to 1262400036 its reverse (6300042621), we get a palindrome (7562442657).

The spelling of 1262400036 in words is "one billion, two hundred sixty-two million, four hundred thousand, thirty-six".