1351666272 has 96 divisors (see below), whose sum is σ = 3906524160. Its totient is φ = 405803520.

The previous prime is 1351666271. The next prime is 1351666331. The reversal of 1351666272 is 2726661531.

It is a tau number, because it is divible by the number of its divisors (96).

It is a self number, because there is not a number n which added to its sum of digits gives 1351666272.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1351666271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109233 + ... + 120975.

It is an arithmetic number, because the mean of its divisors is an integer number (40692960).

Almost surely, 2^1351666272 is an apocalyptic number.

1351666272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1351666272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1953262080).

1351666272 is an abundant number, since it is smaller than the sum of its proper divisors (2554857888).

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

1351666272 is a wasteful number, since it uses less digits than its factorization.

1351666272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11876 (or 11868 counting only the distinct ones).

The product of its digits is 90720, while the sum is 39.

The square root of 1351666272 is about 36765.0142390833. The cubic root of 1351666272 is about 1105.6639736432.

The spelling of 1351666272 in words is "one billion, three hundred fifty-one million, six hundred sixty-six thousand, two hundred seventy-two".