1228947 has 8 divisors (see below), whose sum is σ = 1735056. Its totient is φ = 771072.

The previous prime is 1228943. The next prime is 1228949. The reversal of 1228947 is 7498221.

It is a happy number.

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

It is not a de Polignac number, because 1228947 - 2² = 1228943 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1228943) 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, 11998 + ... + 12099.

It is an arithmetic number, because the mean of its divisors is an integer number (216882).

2^1228947 is an apocalyptic number.

1228947 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1228947 is a deficient number, since it is larger than the sum of its proper divisors (506109).

1228947 is a wasteful number, since it uses less digits than its factorization.

1228947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24117.

The product of its digits is 8064, while the sum is 33.

The square root of 1228947 is about 1108.5788199312. The cubic root of 1228947 is about 107.1135429645.

The spelling of 1228947 in words is "one million, two hundred twenty-eight thousand, nine hundred forty-seven".