1228786247 has 8 divisors (see below), whose sum is σ = 1380843744. Its totient is φ = 1084948128.

The previous prime is 1228786241. The next prime is 1228786249. The reversal of 1228786247 is 7426878221.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1228786247 - 2⁸ = 1228785991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228786241) 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, 2054528 + ... + 2055125.

It is an arithmetic number, because the mean of its divisors is an integer number (172605468).

Almost surely, 2^1228786247 is an apocalyptic number.

1228786247 is a deficient number, since it is larger than the sum of its proper divisors (152057497).

1228786247 is a wasteful number, since it uses less digits than its factorization.

1228786247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4109689.

The product of its digits is 602112, while the sum is 47.

The square root of 1228786247 is about 35054.0475123772. The cubic root of 1228786247 is about 1071.0887241481.

The spelling of 1228786247 in words is "one billion, two hundred twenty-eight million, seven hundred eighty-six thousand, two hundred forty-seven".