1228436671 has 16 divisors (see below), whose sum is σ = 1532337408. Its totient is φ = 956736000.

The previous prime is 1228436653. The next prime is 1228436681. The reversal of 1228436671 is 1766348221.

It is not a de Polignac number, because 1228436671 - 2¹⁷ = 1228305599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228436641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 253471 + ... + 258271.

It is an arithmetic number, because the mean of its divisors is an integer number (95771088).

Almost surely, 2^1228436671 is an apocalyptic number.

1228436671 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1228436671 is a deficient number, since it is larger than the sum of its proper divisors (303900737).

1228436671 is a wasteful number, since it uses less digits than its factorization.

1228436671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8142.

The product of its digits is 96768, while the sum is 40.

The square root of 1228436671 is about 35049.0609146665. The cubic root of 1228436671 is about 1070.9871435775.

The spelling of 1228436671 in words is "one billion, two hundred twenty-eight million, four hundred thirty-six thousand, six hundred seventy-one".