2278648 has 8 divisors (see below), whose sum is σ = 4272480. Its totient is φ = 1139320.

The previous prime is 2278643. The next prime is 2278649. The reversal of 2278648 is 8468722.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2278643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142408 + ... + 142423.

It is an arithmetic number, because the mean of its divisors is an integer number (534060).

2^2278648 is an apocalyptic number.

It is an amenable number.

2278648 is a deficient number, since it is larger than the sum of its proper divisors (1993832).

2278648 is a wasteful number, since it uses less digits than its factorization.

2278648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284837 (or 284833 counting only the distinct ones).

The product of its digits is 43008, while the sum is 37.

The square root of 2278648 is about 1509.5191287294. The cubic root of 2278648 is about 131.5908666592.

It can be divided in two parts, 2278 and 648, that added together give a triangular number (2926 = T₇₆).

The spelling of 2278648 in words is "two million, two hundred seventy-eight thousand, six hundred forty-eight".