1672215 has 32 divisors (see below), whose sum is σ = 2889216. Its totient is φ = 823680.

The previous prime is 1672199. The next prime is 1672219. The reversal of 1672215 is 5122761.

It is not a de Polignac number, because 1672215 - 2⁴ = 1672199 is a prime.

1672215 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1672219) 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, 12700 + ... + 12830.

It is an arithmetic number, because the mean of its divisors is an integer number (90288).

2^1672215 is an apocalyptic number.

1672215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1672215 is a deficient number, since it is larger than the sum of its proper divisors (1217001).

1672215 is a wasteful number, since it uses less digits than its factorization.

1672215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199.

The product of its digits is 840, while the sum is 24.

The square root of 1672215 is about 1293.1415235774. The cubic root of 1672215 is about 118.6945299564.

Adding to 1672215 its reverse (5122761), we get a palindrome (6794976).

The spelling of 1672215 in words is "one million, six hundred seventy-two thousand, two hundred fifteen".