11651172 has 24 divisors (see below), whose sum is σ = 29277696. Its totient is φ = 3584928.

The previous prime is 11651147. The next prime is 11651173. The reversal of 11651172 is 27115611.

It is not an unprimeable number, because it can be changed into a prime (11651173) 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, 37188 + ... + 37499.

It is an arithmetic number, because the mean of its divisors is an integer number (1219904).

Almost surely, 2^11651172 is an apocalyptic number.

11651172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11651172 is an abundant number, since it is smaller than the sum of its proper divisors (17626524).

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

11651172 is a wasteful number, since it uses less digits than its factorization.

11651172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74707 (or 74705 counting only the distinct ones).

The product of its digits is 420, while the sum is 24.

The square root of 11651172 is about 3413.3813147669. The cubic root of 11651172 is about 226.7026192490.

Adding to 11651172 its reverse (27115611), we get a palindrome (38766783).

The spelling of 11651172 in words is "eleven million, six hundred fifty-one thousand, one hundred seventy-two".