1872397 has 8 divisors (see below), whose sum is σ = 2007936. Its totient is φ = 1739712.

The previous prime is 1872389. The next prime is 1872419. The reversal of 1872397 is 7932781.

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

It is not a de Polignac number, because 1872397 - 2³ = 1872389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1872337) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 748 + ... + 2074.

It is an arithmetic number, because the mean of its divisors is an integer number (250992).

2^1872397 is an apocalyptic number.

1872397 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1872397 is a deficient number, since it is larger than the sum of its proper divisors (135539).

1872397 is a wasteful number, since it uses less digits than its factorization.

1872397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1427.

The product of its digits is 21168, while the sum is 37.

The square root of 1872397 is about 1368.3555824419. The cubic root of 1872397 is about 123.2535146231.

The spelling of 1872397 in words is "one million, eight hundred seventy-two thousand, three hundred ninety-seven".