2278490 has 8 divisors (see below), whose sum is σ = 4101300. Its totient is φ = 911392.

The previous prime is 2278487. The next prime is 2278517. The reversal of 2278490 is 948722.

It can be written as a sum of positive squares in 2 ways, for example, as 2111209 + 167281 = 1453^2 + 409^2 .

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

It is a d-powerful number, because it can be written as 2⁵ + 2²¹ + 7⁶ + 8³ + 4⁶ + 9⁵ + 0 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113915 + ... + 113934.

2^2278490 is an apocalyptic number.

2278490 is a deficient number, since it is larger than the sum of its proper divisors (1822810).

2278490 is a wasteful number, since it uses less digits than its factorization.

2278490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227856.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 2278490 is about 1509.4667932750. The cubic root of 2278490 is about 131.5878251133.

The spelling of 2278490 in words is "two million, two hundred seventy-eight thousand, four hundred ninety".