2402172 has 36 divisors (see below), whose sum is σ = 6191640. Its totient is φ = 784992.

The previous prime is 2402161. The next prime is 2402173. The reversal of 2402172 is 2712042.

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 a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2402173) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1279 + ... + 2537.

It is an arithmetic number, because the mean of its divisors is an integer number (171990).

2^2402172 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 2402172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3095820).

2402172 is an abundant number, since it is smaller than the sum of its proper divisors (3789468).

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

2402172 is a wasteful number, since it uses less digits than its factorization.

2402172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1322 (or 1317 counting only the distinct ones).

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

The square root of 2402172 is about 1549.8941899368. The cubic root of 2402172 is about 133.9269669598.

The spelling of 2402172 in words is "two million, four hundred two thousand, one hundred seventy-two".