1120438380 has 48 divisors (see below), whose sum is σ = 3321773280. Its totient is φ = 281207808.

The previous prime is 1120438369. The next prime is 1120438381. The reversal of 1120438380 is 838340211.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (1120438381) 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 15 ways as a sum of consecutive naturals, for example, 548215 + ... + 550254.

It is an arithmetic number, because the mean of its divisors is an integer number (69203610).

Almost surely, 2^1120438380 is an apocalyptic number.

1120438380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1120438380 is an abundant number, since it is smaller than the sum of its proper divisors (2201334900).

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

1120438380 is a wasteful number, since it uses less digits than its factorization.

1120438380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1098498 (or 1098496 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 1120438380 is about 33472.9499745690. The cubic root of 1120438380 is about 1038.6342958846.

Adding to 1120438380 its reverse (838340211), we get a palindrome (1958778591).

The spelling of 1120438380 in words is "one billion, one hundred twenty million, four hundred thirty-eight thousand, three hundred eighty".