1228747 has 8 divisors (see below), whose sum is σ = 1366400. Its totient is φ = 1097280.

The previous prime is 1228741. The next prime is 1228763. The reversal of 1228747 is 7478221.

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 1228747 - 2¹¹ = 1226699 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1228741) 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, 1122 + ... + 1927.

It is an arithmetic number, because the mean of its divisors is an integer number (170800).

2^1228747 is an apocalyptic number.

1228747 is a deficient number, since it is larger than the sum of its proper divisors (137653).

1228747 is a wasteful number, since it uses less digits than its factorization.

1228747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3093.

The product of its digits is 6272, while the sum is 31.

The square root of 1228747 is about 1108.4886106767. The cubic root of 1228747 is about 107.1077320628.

The spelling of 1228747 in words is "one million, two hundred twenty-eight thousand, seven hundred forty-seven".