2240172 has 36 divisors (see below), whose sum is σ = 6178536. Its totient is φ = 678720.

The previous prime is 2240159. The next prime is 2240191. The reversal of 2240172 is 2710422.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2433 + ... + 3224.

It is an arithmetic number, because the mean of its divisors is an integer number (171626).

2^2240172 is an apocalyptic number.

2240172 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2240172 is an abundant number, since it is smaller than the sum of its proper divisors (3938364).

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

2240172 is a wasteful number, since it uses less digits than its factorization.

2240172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5678 (or 5673 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 2240172 is about 1496.7204147736. The cubic root of 2240172 is about 130.8460012707.

Adding to 2240172 its reverse (2710422), we get a palindrome (4950594).

The spelling of 2240172 in words is "two million, two hundred forty thousand, one hundred seventy-two".