145228452 has 12 divisors (see below), whose sum is σ = 338866416. Its totient is φ = 48409480.

The previous prime is 145228423. The next prime is 145228453. The reversal of 145228452 is 254822541.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (145228453) 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, 6051174 + ... + 6051197.

It is an arithmetic number, because the mean of its divisors is an integer number (28238868).

Almost surely, 2^145228452 is an apocalyptic number.

145228452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

145228452 is an abundant number, since it is smaller than the sum of its proper divisors (193637964).

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

145228452 is a wasteful number, since it uses less digits than its factorization.

145228452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12102378 (or 12102376 counting only the distinct ones).

The product of its digits is 25600, while the sum is 33.

The square root of 145228452 is about 12051.0767983612. The cubic root of 145228452 is about 525.6345488342.

The spelling of 145228452 in words is "one hundred forty-five million, two hundred twenty-eight thousand, four hundred fifty-two".