1820734 has 8 divisors (see below), whose sum is σ = 2891808. Its totient is φ = 856800.

The previous prime is 1820711. The next prime is 1820737. The reversal of 1820734 is 4370281.

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

It is a junction number, because it is equal to n+sod(n) for n = 1820699 and 1820708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1820737) 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, 26742 + ... + 26809.

It is an arithmetic number, because the mean of its divisors is an integer number (361476).

2^1820734 is an apocalyptic number.

1820734 is a deficient number, since it is larger than the sum of its proper divisors (1071074).

1820734 is a wasteful number, since it uses less digits than its factorization.

1820734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53570.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 1820734 is about 1349.3457673999. The cubic root of 1820734 is about 122.1093259921.

The spelling of 1820734 in words is "one million, eight hundred twenty thousand, seven hundred thirty-four".