1145390232 has 192 divisors, whose sum is σ = 3593226240. Its totient is φ = 297676800.

The previous prime is 1145390189. The next prime is 1145390237. The reversal of 1145390232 is 2320935411.

It is a super-2 number, since 2×1145390232² = 2623837567122027648, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1145390232.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145390237) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1504732 + ... + 1505492.

It is an arithmetic number, because the mean of its divisors is an integer number (18714720).

Almost surely, 2^1145390232 is an apocalyptic number.

1145390232 is a gapful number since it is divisible by the number (12) 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 1145390232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1796613120).

1145390232 is an abundant number, since it is smaller than the sum of its proper divisors (2447836008).

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

1145390232 is a wasteful number, since it uses less digits than its factorization.

1145390232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 842 (or 821 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 1145390232 is about 33843.6143459885. The cubic root of 1145390232 is about 1046.2877927850.

The spelling of 1145390232 in words is "one billion, one hundred forty-five million, three hundred ninety thousand, two hundred thirty-two".