1872947 has 4 divisors (see below), whose sum is σ = 1890240. Its totient is φ = 1855656.

The previous prime is 1872943. The next prime is 1872953. The reversal of 1872947 is 7492781.

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 1872947 - 2² = 1872943 is a prime.

It is an alternating number because its digits alternate between odd and even.

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 1872947.

It is not an unprimeable number, because it can be changed into a prime (1872943) 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, 8483 + ... + 8700.

It is an arithmetic number, because the mean of its divisors is an integer number (472560).

2^1872947 is an apocalyptic number.

1872947 is a deficient number, since it is larger than the sum of its proper divisors (17293).

1872947 is a wasteful number, since it uses less digits than its factorization.

1872947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17292.

The product of its digits is 28224, while the sum is 38.

The square root of 1872947 is about 1368.5565388394. The cubic root of 1872947 is about 123.2655816503.

The spelling of 1872947 in words is "one million, eight hundred seventy-two thousand, nine hundred forty-seven".