1296904212 has 18 divisors (see below), whose sum is σ = 3278285738. Its totient is φ = 432301392.

The previous prime is 1296904183. The next prime is 1296904237. The reversal of 1296904212 is 2124096921.

It can be written as a sum of positive squares in only one way, i.e., 1286943876 + 9960336 = 35874^2 + 3156^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 36025117 = 1296904212 / (1 + 2 + 9 + 6 + 9 + 0 + 4 + 2 + 1 + 2).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18012523 + ... + 18012594.

Almost surely, 2^1296904212 is an apocalyptic number.

1296904212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1296904212 is an abundant number, since it is smaller than the sum of its proper divisors (1981381526).

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

1296904212 is a wasteful number, since it uses less digits than its factorization.

1296904212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36025127 (or 36025122 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 1296904212 is about 36012.5563102649. The cubic root of 1296904212 is about 1090.5258557417.

The spelling of 1296904212 in words is "one billion, two hundred ninety-six million, nine hundred four thousand, two hundred twelve".