2361990 has 32 divisors (see below), whose sum is σ = 5803776. Its totient is φ = 614880.

The previous prime is 2361977. The next prime is 2361991. The reversal of 2361990 is 991632.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a zygodrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2361991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 375 + ... + 2205.

It is an arithmetic number, because the mean of its divisors is an integer number (181368).

2^2361990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2361990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2901888).

2361990 is an abundant number, since it is smaller than the sum of its proper divisors (3441786).

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

2361990 is a wasteful number, since it uses less digits than its factorization.

2361990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1884.

The product of its (nonzero) digits is 2916, while the sum is 30.

The square root of 2361990 is about 1536.8767029271. The cubic root of 2361990 is about 133.1760158460.

The spelling of 2361990 in words is "two million, three hundred sixty-one thousand, nine hundred ninety".