1228477632 has 56 divisors (see below), whose sum is σ = 3253532736. Its totient is φ = 409091328.

The previous prime is 1228477603. The next prime is 1228477637. The reversal of 1228477632 is 2367748221.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1228477637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243843 + ... + 248829.

Almost surely, 2^1228477632 is an apocalyptic number.

1228477632 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1228477632 is an abundant number, since it is smaller than the sum of its proper divisors (2025055104).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1228477632 is a wasteful number, since it uses less digits than its factorization.

1228477632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6285 (or 6275 counting only the distinct ones).

The product of its digits is 225792, while the sum is 42.

The square root of 1228477632 is about 35049.6452478481. The cubic root of 1228477632 is about 1070.9990471126. Note that the first 3 decimals are identical.

The spelling of 1228477632 in words is "one billion, two hundred twenty-eight million, four hundred seventy-seven thousand, six hundred thirty-two".