145322232 has 64 divisors (see below), whose sum is σ = 401967360. Its totient is φ = 43411200.

The previous prime is 145322173. The next prime is 145322267. The reversal of 145322232 is 232223541.

It is a super-2 number, since 2×145322232² = 42237102226923648, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14868 + ... + 22620.

It is an arithmetic number, because the mean of its divisors is an integer number (6280740).

Almost surely, 2^145322232 is an apocalyptic number.

145322232 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 145322232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (200983680).

145322232 is an abundant number, since it is smaller than the sum of its proper divisors (256645128).

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

145322232 is a wasteful number, since it uses less digits than its factorization.

145322232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7844 (or 7840 counting only the distinct ones).

The product of its digits is 2880, while the sum is 24.

The square root of 145322232 is about 12054.9671090385. The cubic root of 145322232 is about 525.7476657905.

Adding to 145322232 its reverse (232223541), we get a palindrome (377545773).

The spelling of 145322232 in words is "one hundred forty-five million, three hundred twenty-two thousand, two hundred thirty-two".