1228958 has 8 divisors (see below), whose sum is σ = 1940520. Its totient is φ = 582120.

The previous prime is 1228951. The next prime is 1228961. The reversal of 1228958 is 8598221.

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

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228951) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16133 + ... + 16208.

It is an arithmetic number, because the mean of its divisors is an integer number (242565).

2^1228958 is an apocalyptic number.

1228958 is a deficient number, since it is larger than the sum of its proper divisors (711562).

1228958 is a wasteful number, since it uses less digits than its factorization.

1228958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32362.

The product of its digits is 11520, while the sum is 35.

The square root of 1228958 is about 1108.5837812272. The cubic root of 1228958 is about 107.1138625458.

The spelling of 1228958 in words is "one million, two hundred twenty-eight thousand, nine hundred fifty-eight".