1272200620 has 12 divisors (see below), whose sum is σ = 2671621344. Its totient is φ = 508880240.

The previous prime is 1272200597. The next prime is 1272200647. The reversal of 1272200620 is 260022721.

It is a junction number, because it is equal to n+sod(n) for n = 1272200591 and 1272200600.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31804996 + ... + 31805035.

It is an arithmetic number, because the mean of its divisors is an integer number (222635112).

Almost surely, 2^1272200620 is an apocalyptic number.

1272200620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1272200620 is an abundant number, since it is smaller than the sum of its proper divisors (1399420724).

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

1272200620 is a wasteful number, since it uses less digits than its factorization.

1272200620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63610040 (or 63610038 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 1272200620 is about 35667.9214421026. The cubic root of 1272200620 is about 1083.5572632690.

The spelling of 1272200620 in words is "one billion, two hundred seventy-two million, two hundred thousand, six hundred twenty".