1820074 has 8 divisors (see below), whose sum is σ = 2741508. Its totient is φ = 906240.

The previous prime is 1820051. The next prime is 1820087. The reversal of 1820074 is 4700281.

It can be written as a sum of positive squares in 2 ways, for example, as 1671849 + 148225 = 1293^2 + 385^2 .

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

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, 1257 + ... + 2284.

2^1820074 is an apocalyptic number.

1820074 is a deficient number, since it is larger than the sum of its proper divisors (921434).

1820074 is a wasteful number, since it uses less digits than its factorization.

1820074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3800.

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 1820074 is about 1349.1011822691. The cubic root of 1820074 is about 122.0945696914.

The spelling of 1820074 in words is "one million, eight hundred twenty thousand, seventy-four".