11405172 has 48 divisors (see below), whose sum is σ = 27518400. Its totient is φ = 3674880.

The previous prime is 11405167. The next prime is 11405201. The reversal of 11405172 is 27150411.

It is a happy number.

11405172 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62922 + ... + 63102.

It is an arithmetic number, because the mean of its divisors is an integer number (573300).

Almost surely, 2^11405172 is an apocalyptic number.

11405172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11405172 is an abundant number, since it is smaller than the sum of its proper divisors (16113228).

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

11405172 is a wasteful number, since it uses less digits than its factorization.

11405172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336 (or 334 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 21.

The square root of 11405172 is about 3377.1544234755. The cubic root of 11405172 is about 225.0957419702.

Adding to 11405172 its reverse (27150411), we get a palindrome (38555583).

The spelling of 11405172 in words is "eleven million, four hundred five thousand, one hundred seventy-two".