1978234 has 8 divisors (see below), whose sum is σ = 3063168. Its totient is φ = 957180.

The previous prime is 1978219. The next prime is 1978267. The reversal of 1978234 is 4328791.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1978234.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15892 + ... + 16015.

It is an arithmetic number, because the mean of its divisors is an integer number (382896).

2^1978234 is an apocalyptic number.

1978234 is a deficient number, since it is larger than the sum of its proper divisors (1084934).

1978234 is a wasteful number, since it uses less digits than its factorization.

1978234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31940.

The product of its digits is 12096, while the sum is 34.

The square root of 1978234 is about 1406.4970671850. The cubic root of 1978234 is about 125.5333794801.

The spelling of 1978234 in words is "one million, nine hundred seventy-eight thousand, two hundred thirty-four".