1920247 has 8 divisors (see below), whose sum is σ = 2290176. Its totient is φ = 1574232.

The previous prime is 1920239. The next prime is 1920257. The reversal of 1920247 is 7420291.

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

It is a cyclic number.

It is not a de Polignac number, because 1920247 - 2³ = 1920239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1920227) 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, 5803 + ... + 6124.

It is an arithmetic number, because the mean of its divisors is an integer number (286272).

2^1920247 is an apocalyptic number.

1920247 is a deficient number, since it is larger than the sum of its proper divisors (369929).

1920247 is a wasteful number, since it uses less digits than its factorization.

1920247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11957.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 1920247 is about 1385.7297716366. The cubic root of 1920247 is about 124.2946297765.

The spelling of 1920247 in words is "one million, nine hundred twenty thousand, two hundred forty-seven".