145226144 has 24 divisors (see below), whose sum is σ = 326759328. Its totient is φ = 62239680.

The previous prime is 145226143. The next prime is 145226149. The reversal of 145226144 is 441622541.

145226144 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×145226144² = 42181265802217472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145226143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 323942 + ... + 324389.

It is an arithmetic number, because the mean of its divisors is an integer number (13614972).

Almost surely, 2^145226144 is an apocalyptic number.

145226144 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

145226144 is an abundant number, since it is smaller than the sum of its proper divisors (181533184).

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

145226144 is an equidigital number, since it uses as much as digits as its factorization.

145226144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648348 (or 648340 counting only the distinct ones).

The product of its digits is 7680, while the sum is 29.

The square root of 145226144 is about 12050.9810389030. The cubic root of 145226144 is about 525.6317643225.

Adding to 145226144 its reverse (441622541), we get a palindrome (586848685).

The spelling of 145226144 in words is "one hundred forty-five million, two hundred twenty-six thousand, one hundred forty-four".