2278719 has 16 divisors (see below), whose sum is σ = 3468640. Its totient is φ = 1477440.

The previous prime is 2278709. The next prime is 2278729. The reversal of 2278719 is 9178722.

It is an interprime number because it is at equal distance from previous prime (2278709) and next prime (2278729).

It is not a de Polignac number, because 2278719 - 2⁹ = 2278207 is a prime.

It is a super-2 number, since 2×2278719² = 10385120561922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2278709) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142 + ... + 2139.

It is an arithmetic number, because the mean of its divisors is an integer number (216790).

2^2278719 is an apocalyptic number.

2278719 is a deficient number, since it is larger than the sum of its proper divisors (1189921).

2278719 is a wasteful number, since it uses less digits than its factorization.

2278719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2327 (or 2321 counting only the distinct ones).

The product of its digits is 14112, while the sum is 36.

The square root of 2278719 is about 1509.5426459693. The cubic root of 2278719 is about 131.5922333840.

The spelling of 2278719 in words is "two million, two hundred seventy-eight thousand, seven hundred nineteen".