11401272 has 24 divisors (see below), whose sum is σ = 30878640. Its totient is φ = 3800400.

The previous prime is 11401267. The next prime is 11401279. The reversal of 11401272 is 27210411.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11401279) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 79104 + ... + 79247.

It is an arithmetic number, because the mean of its divisors is an integer number (1286610).

Almost surely, 2^11401272 is an apocalyptic number.

11401272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11401272 is an abundant number, since it is smaller than the sum of its proper divisors (19477368).

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

11401272 is a wasteful number, since it uses less digits than its factorization.

11401272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158363 (or 158356 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

The square root of 11401272 is about 3376.5769649158. The cubic root of 11401272 is about 225.0700818727.

Adding to 11401272 its reverse (27210411), we get a palindrome (38611683).

The spelling of 11401272 in words is "eleven million, four hundred one thousand, two hundred seventy-two".