2287990 has 8 divisors (see below), whose sum is σ = 4118400. Its totient is φ = 915192.

The previous prime is 2287973. The next prime is 2287991. The reversal of 2287990 is 997822.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2287991) 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, 114390 + ... + 114409.

It is an arithmetic number, because the mean of its divisors is an integer number (514800).

2^2287990 is an apocalyptic number.

2287990 is a deficient number, since it is larger than the sum of its proper divisors (1830410).

2287990 is a wasteful number, since it uses less digits than its factorization.

2287990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228806.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 2287990 is about 1512.6103265547. The cubic root of 2287990 is about 131.7704535167.

The spelling of 2287990 in words is "two million, two hundred eighty-seven thousand, nine hundred ninety".