1228127832 has 48 divisors (see below), whose sum is σ = 3449376840. Its totient is φ = 409375296.

The previous prime is 1228127779. The next prime is 1228127891. The reversal of 1228127832 is 2387218221.

1228127832 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 313933 + ... + 317820.

Almost surely, 2^1228127832 is an apocalyptic number.

1228127832 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1228127832 is an abundant number, since it is smaller than the sum of its proper divisors (2221249008).

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

1228127832 is an equidigital number, since it uses as much as digits as its factorization.

1228127832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631774 (or 631758 counting only the distinct ones).

The product of its digits is 21504, while the sum is 36.

The square root of 1228127832 is about 35044.6548278051. The cubic root of 1228127832 is about 1070.8973844202.

The spelling of 1228127832 in words is "one billion, two hundred twenty-eight million, one hundred twenty-seven thousand, eight hundred thirty-two".