2278297 has 8 divisors (see below), whose sum is σ = 2615552. Its totient is φ = 1944000.

The previous prime is 2278291. The next prime is 2278301. The reversal of 2278297 is 7928722.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2278297 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 2¹² + 2²⁰ + 7³ + 8 + 2²⁰ + 9⁵ + 7⁶ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2278291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1297 + ... + 2497.

It is an arithmetic number, because the mean of its divisors is an integer number (326944).

2^2278297 is an apocalyptic number.

It is an amenable number.

2278297 is a deficient number, since it is larger than the sum of its proper divisors (337255).

2278297 is a wasteful number, since it uses less digits than its factorization.

2278297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1479.

The product of its digits is 28224, while the sum is 37.

The square root of 2278297 is about 1509.4028620617. The cubic root of 2278297 is about 131.5841096164.

The spelling of 2278297 in words is "two million, two hundred seventy-eight thousand, two hundred ninety-seven".