2018730 has 32 divisors (see below), whose sum is σ = 5537664. Its totient is φ = 461376.

The previous prime is 2018729. The next prime is 2018741. The reversal of 2018730 is 378102.

2018730 = T₂₂₁ + T₂₂₂ + ... + T₂₈₃.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2018697 and 2018706.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4597 + ... + 5016.

It is an arithmetic number, because the mean of its divisors is an integer number (173052).

2^2018730 is an apocalyptic number.

2018730 is an abundant number, since it is smaller than the sum of its proper divisors (3518934).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2018730 is a wasteful number, since it uses less digits than its factorization.

2018730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9630.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 2018730 is about 1420.8201856674. The cubic root of 2018730 is about 126.3841889239.

The spelling of 2018730 in words is "two million, eighteen thousand, seven hundred thirty".