1228671401 has 16 divisors (see below), whose sum is σ = 1277337600. Its totient is φ = 1181216400.

The previous prime is 1228671377. The next prime is 1228671403. The reversal of 1228671401 is 1041768221.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1228671401 - 2⁶ = 1228671337 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1228671403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 547640 + ... + 549878.

It is an arithmetic number, because the mean of its divisors is an integer number (79833600).

Almost surely, 2^1228671401 is an apocalyptic number.

It is an amenable number.

1228671401 is a deficient number, since it is larger than the sum of its proper divisors (48666199).

1228671401 is a wasteful number, since it uses less digits than its factorization.

1228671401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2500.

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 1228671401 is about 35052.4093465770. The cubic root of 1228671401 is about 1071.0553540675.

The spelling of 1228671401 in words is "one billion, two hundred twenty-eight million, six hundred seventy-one thousand, four hundred one".