1100172 has 24 divisors (see below), whose sum is σ = 2718576. Its totient is φ = 345088.

The previous prime is 1100171. The next prime is 1100179. The reversal of 1100172 is 2710011.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (1100171) 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, 2493 + ... + 2900.

It is an arithmetic number, because the mean of its divisors is an integer number (113274).

2^1100172 is an apocalyptic number.

1100172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1100172 is an abundant number, since it is smaller than the sum of its proper divisors (1618404).

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

1100172 is a wasteful number, since it uses less digits than its factorization.

1100172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5417 (or 5415 counting only the distinct ones).

The product of its (nonzero) digits is 14, while the sum is 12.

The square root of 1100172 is about 1048.8908427477. The cubic root of 1100172 is about 103.2333916343.

Adding to 1100172 its reverse (2710011), we get a palindrome (3810183).

The spelling of 1100172 in words is "one million, one hundred thousand, one hundred seventy-two".