145229312 has 40 divisors (see below), whose sum is σ = 305467800. Its totient is φ = 68788224.

The previous prime is 145229309. The next prime is 145229321. The reversal of 145229312 is 213922541.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2264 + ... + 17192.

It is an arithmetic number, because the mean of its divisors is an integer number (7636695).

Almost surely, 2^145229312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145229312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152733900).

145229312 is an abundant number, since it is smaller than the sum of its proper divisors (160238488).

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

145229312 is an equidigital number, since it uses as much as digits as its factorization.

145229312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14966 (or 14950 counting only the distinct ones).

The product of its digits is 4320, while the sum is 29.

The square root of 145229312 is about 12051.1124797672. The cubic root of 145229312 is about 525.6355863830.

It can be divided in two parts, 145229 and 312, that added together give a palindrome (145541).

The spelling of 145229312 in words is "one hundred forty-five million, two hundred twenty-nine thousand, three hundred twelve".