1272038208 has 112 divisors (see below), whose sum is σ = 3864132480. Its totient is φ = 361764864.

The previous prime is 1272038189. The next prime is 1272038231. The reversal of 1272038208 is 8028302721.

It is a tau number, because it is divible by the number of its divisors (112).

It is a super-2 number, since 2×1272038208² = 3236162405223702528, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 305710 + ... + 309842.

Almost surely, 2^1272038208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1272038208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1932066240).

1272038208 is an abundant number, since it is smaller than the sum of its proper divisors (2592094272).

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

1272038208 is a wasteful number, since it uses less digits than its factorization.

1272038208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4384 (or 4374 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 1272038208 is about 35665.6446457932. The cubic root of 1272038208 is about 1083.5111515188.

The spelling of 1272038208 in words is "one billion, two hundred seventy-two million, thirty-eight thousand, two hundred eight".