1373521272 has 32 divisors (see below), whose sum is σ = 3458515200. Its totient is φ = 454545504.

The previous prime is 1373521271. The next prime is 1373521297. The reversal of 1373521272 is 2721253731.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1373521271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 202528 + ... + 209199.

It is an arithmetic number, because the mean of its divisors is an integer number (108078600).

Almost surely, 2^1373521272 is an apocalyptic number.

1373521272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1373521272 is an abundant number, since it is smaller than the sum of its proper divisors (2084993928).

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

1373521272 is a wasteful number, since it uses less digits than its factorization.

1373521272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411875 (or 411871 counting only the distinct ones).

The product of its digits is 17640, while the sum is 33.

The square root of 1373521272 is about 37061.0479074729. The cubic root of 1373521272 is about 1111.5912766478.

The spelling of 1373521272 in words is "one billion, three hundred seventy-three million, five hundred twenty-one thousand, two hundred seventy-two".