2247778 has 8 divisors (see below), whose sum is σ = 3631068. Its totient is φ = 1037424.

The previous prime is 2247737. The next prime is 2247793. The reversal of 2247778 is 8777422.

2247778 is nontrivially palindromic in base 4.

It can be written as a sum of positive squares in 2 ways, for example, as 1896129 + 351649 = 1377^2 + 593^2 .

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

It is a plaindrome in base 10.

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, 43201 + ... + 43252.

2^2247778 is an apocalyptic number.

2247778 is a deficient number, since it is larger than the sum of its proper divisors (1383290).

2247778 is a wasteful number, since it uses less digits than its factorization.

2247778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86468.

The product of its digits is 43904, while the sum is 37.

The square root of 2247778 is about 1499.2591503806. The cubic root of 2247778 is about 130.9939200410.

It can be divided in two parts, 224777 and 8, that added together give a triangular number (224785 = T₆₇₀).

The spelling of 2247778 in words is "two million, two hundred forty-seven thousand, seven hundred seventy-eight".