1145226320 has 40 divisors (see below), whose sum is σ = 3043031424. Its totient is φ = 392648832.

The previous prime is 1145226319. The next prime is 1145226347. The reversal of 1145226320 is 236225411.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 1145226320.

It is a congruent number.

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, 1021964 + ... + 1023083.

Almost surely, 2^1145226320 is an apocalyptic number.

1145226320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1145226320 is an abundant number, since it is smaller than the sum of its proper divisors (1897805104).

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

1145226320 is a wasteful number, since it uses less digits than its factorization.

1145226320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2045067 (or 2045061 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 1145226320 is about 33841.1926503780. The cubic root of 1145226320 is about 1046.2378804491.

Subtracting from 1145226320 its reverse (236225411), we obtain a palindrome (909000909).

The spelling of 1145226320 in words is "one billion, one hundred forty-five million, two hundred twenty-six thousand, three hundred twenty".