1226172 has 12 divisors (see below), whose sum is σ = 2861096. Its totient is φ = 408720.

The previous prime is 1226117. The next prime is 1226179. The reversal of 1226172 is 2716221.

It is a tau number, because it is divible by the number of its divisors (12).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1226179) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51079 + ... + 51102.

2^1226172 is an apocalyptic number.

1226172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1226172 is an abundant number, since it is smaller than the sum of its proper divisors (1634924).

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

1226172 is a wasteful number, since it uses less digits than its factorization.

1226172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102188 (or 102186 counting only the distinct ones).

The product of its digits is 336, while the sum is 21.

The square root of 1226172 is about 1107.3265101134. The cubic root of 1226172 is about 107.0328603182.

The spelling of 1226172 in words is "one million, two hundred twenty-six thousand, one hundred seventy-two".