1154402320 has 20 divisors (see below), whose sum is σ = 2683985580. Its totient is φ = 461760896.

The previous prime is 1154402309. The next prime is 1154402339. The reversal of 1154402320 is 232044511.

It can be written as a sum of positive squares in 2 ways, for example, as 355096336 + 799305984 = 18844^2 + 28272^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 1154402291 and 1154402300.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 7214935 + ... + 7215094.

It is an arithmetic number, because the mean of its divisors is an integer number (134199279).

Almost surely, 2^1154402320 is an apocalyptic number.

1154402320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1154402320 is an abundant number, since it is smaller than the sum of its proper divisors (1529583260).

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

1154402320 is a wasteful number, since it uses less digits than its factorization.

1154402320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14430042 (or 14430036 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 1154402320 is about 33976.4965821963. The cubic root of 1154402320 is about 1049.0247391857.

Adding to 1154402320 its reverse (232044511), we get a palindrome (1386446831).

The spelling of 1154402320 in words is "one billion, one hundred fifty-four million, four hundred two thousand, three hundred twenty".