2351990 has 8 divisors (see below), whose sum is σ = 4233600. Its totient is φ = 940792.

The previous prime is 2351989. The next prime is 2352011. The reversal of 2351990 is 991532.

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

It is a Curzon number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 117590 + ... + 117609.

It is an arithmetic number, because the mean of its divisors is an integer number (529200).

2^2351990 is an apocalyptic number.

2351990 is a deficient number, since it is larger than the sum of its proper divisors (1881610).

2351990 is a wasteful number, since it uses less digits than its factorization.

2351990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235206.

The product of its (nonzero) digits is 2430, while the sum is 29.

The square root of 2351990 is about 1533.6199007577. The cubic root of 2351990 is about 132.9878067477.

The spelling of 2351990 in words is "two million, three hundred fifty-one thousand, nine hundred ninety".