1228831488 has 108 divisors (see below), whose sum is σ = 3697228080. Its totient is φ = 391784448.

The previous prime is 1228831481. The next prime is 1228831547. The reversal of 1228831488 is 8841388221.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

1228831488 is a modest number, since divided by 31488 gives 12288 as remainder.

It is not an unprimeable number, because it can be changed into a prime (1228831481) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41398 + ... + 64586.

Almost surely, 2^1228831488 is an apocalyptic number.

1228831488 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1228831488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1848614040).

1228831488 is an abundant number, since it is smaller than the sum of its proper divisors (2468396592).

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

1228831488 is a wasteful number, since it uses less digits than its factorization.

1228831488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23234 (or 23217 counting only the distinct ones).

The product of its digits is 196608, while the sum is 45.

The square root of 1228831488 is about 35054.6928099506. The cubic root of 1228831488 is about 1071.1018689703.

The spelling of 1228831488 in words is "one billion, two hundred twenty-eight million, eight hundred thirty-one thousand, four hundred eighty-eight".