2288290 has 8 divisors (see below), whose sum is σ = 4118940. Its totient is φ = 915312.

The previous prime is 2288287. The next prime is 2288291. The reversal of 2288290 is 928822.

It can be written as a sum of positive squares in 2 ways, for example, as 2093809 + 194481 = 1447^2 + 441^2 .

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

It is a super-2 number, since 2×2288290² = 10472542248200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2288291) 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, 114405 + ... + 114424.

2^2288290 is an apocalyptic number.

2288290 is a deficient number, since it is larger than the sum of its proper divisors (1830650).

2288290 is a wasteful number, since it uses less digits than its factorization.

2288290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228836.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 2288290 is about 1512.7094896245. The cubic root of 2288290 is about 131.7762124883.

The spelling of 2288290 in words is "two million, two hundred eighty-eight thousand, two hundred ninety".