1154223240 has 32 divisors (see below), whose sum is σ = 3462670080. Its totient is φ = 307792832.

The previous prime is 1154223233. The next prime is 1154223281. The reversal of 1154223240 is 423224511.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1154223240.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4809144 + ... + 4809383.

It is an arithmetic number, because the mean of its divisors is an integer number (108208440).

Almost surely, 2^1154223240 is an apocalyptic number.

1154223240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1154223240 is an abundant number, since it is smaller than the sum of its proper divisors (2308446840).

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

1154223240 is a wasteful number, since it uses less digits than its factorization.

1154223240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9618541 (or 9618537 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 1154223240 is about 33973.8611288149. The cubic root of 1154223240 is about 1048.9704920479.

Adding to 1154223240 its reverse (423224511), we get a palindrome (1577447751).

The spelling of 1154223240 in words is "one billion, one hundred fifty-four million, two hundred twenty-three thousand, two hundred forty".