2249278 has 4 divisors (see below), whose sum is σ = 3373920. Its totient is φ = 1124638.

The previous prime is 2249251. The next prime is 2249281. The reversal of 2249278 is 8729422.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 562318 + ... + 562321.

It is an arithmetic number, because the mean of its divisors is an integer number (843480).

2^2249278 is an apocalyptic number.

2249278 is a deficient number, since it is larger than the sum of its proper divisors (1124642).

2249278 is a wasteful number, since it uses less digits than its factorization.

2249278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1124641.

The product of its digits is 16128, while the sum is 34.

The square root of 2249278 is about 1499.7593140234. The cubic root of 2249278 is about 131.0230520977.

The spelling of 2249278 in words is "two million, two hundred forty-nine thousand, two hundred seventy-eight".