1872407 has 4 divisors (see below), whose sum is σ = 1953840. Its totient is φ = 1790976.

The previous prime is 1872389. The next prime is 1872419. The reversal of 1872407 is 7042781.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1872407 - 2¹⁰ = 1871383 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1872407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1872427) 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, 40682 + ... + 40727.

It is an arithmetic number, because the mean of its divisors is an integer number (488460).

2^1872407 is an apocalyptic number.

1872407 is a deficient number, since it is larger than the sum of its proper divisors (81433).

1872407 is an equidigital number, since it uses as much as digits as its factorization.

1872407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81432.

The product of its (nonzero) digits is 3136, while the sum is 29.

The square root of 1872407 is about 1368.3592364580. The cubic root of 1872407 is about 123.2537340447.

The spelling of 1872407 in words is "one million, eight hundred seventy-two thousand, four hundred seven".