1272208398 has 8 divisors (see below), whose sum is σ = 2544416808. Its totient is φ = 424069464.

The previous prime is 1272208397. The next prime is 1272208409. The reversal of 1272208398 is 8938022721.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

1272208398 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1272208397) 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, 106017361 + ... + 106017372.

It is an arithmetic number, because the mean of its divisors is an integer number (318052101).

Almost surely, 2^1272208398 is an apocalyptic number.

1272208398 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1272208398 is a wasteful number, since it uses less digits than its factorization.

1272208398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212034738.

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 1272208398 is about 35668.0304754832. The cubic root of 1272208398 is about 1083.5594714876.

The spelling of 1272208398 in words is "one billion, two hundred seventy-two million, two hundred eight thousand, three hundred ninety-eight".