2170402 has 8 divisors (see below), whose sum is σ = 3506076. Its totient is φ = 1001712.

The previous prime is 2170393. The next prime is 2170409. The reversal of 2170402 is 2040712.

It can be written as a sum of positive squares in 2 ways, for example, as 2163841 + 6561 = 1471^2 + 81^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2170409) 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, 41713 + ... + 41764.

2^2170402 is an apocalyptic number.

2170402 is a deficient number, since it is larger than the sum of its proper divisors (1335674).

2170402 is a wasteful number, since it uses less digits than its factorization.

2170402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83492.

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 2170402 is about 1473.2284276378. The cubic root of 2170402 is about 129.4732531733.

The spelling of 2170402 in words is "two million, one hundred seventy thousand, four hundred two".