1273621472 has 24 divisors (see below), whose sum is σ = 2565757656. Its totient is φ = 622000512.

The previous prime is 1273621451. The next prime is 1273621519. The reversal of 1273621472 is 2741263721.

It is a super-2 number, since 2×1273621472² = 3244223307878893568, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 461423 + ... + 464174.

It is an arithmetic number, because the mean of its divisors is an integer number (106906569).

Almost surely, 2^1273621472 is an apocalyptic number.

It is an amenable number.

1273621472 is an abundant number, since it is smaller than the sum of its proper divisors (1292136184).

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

1273621472 is an equidigital number, since it uses as much as digits as its factorization.

1273621472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 925650 (or 925642 counting only the distinct ones).

The product of its digits is 28224, while the sum is 35.

The square root of 1273621472 is about 35687.8336691932. The cubic root of 1273621472 is about 1083.9605020035.

The spelling of 1273621472 in words is "one billion, two hundred seventy-three million, six hundred twenty-one thousand, four hundred seventy-two".