2258172 has 96 divisors (see below), whose sum is σ = 6988800. Its totient is φ = 616896.

The previous prime is 2258167. The next prime is 2258173. The reversal of 2258172 is 2718522.

2258172 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2258173) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21873 + ... + 21975.

It is an arithmetic number, because the mean of its divisors is an integer number (72800).

2^2258172 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2258172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3494400).

2258172 is an abundant number, since it is smaller than the sum of its proper divisors (4730628).

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

2258172 is a wasteful number, since it uses less digits than its factorization.

2258172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152 (or 144 counting only the distinct ones).

The product of its digits is 2240, while the sum is 27.

The square root of 2258172 is about 1502.7215310895. The cubic root of 2258172 is about 131.1955202466.

The spelling of 2258172 in words is "two million, two hundred fifty-eight thousand, one hundred seventy-two".