145724244 has 12 divisors (see below), whose sum is σ = 340023264. Its totient is φ = 48574744.

The previous prime is 145724237. The next prime is 145724261. The reversal of 145724244 is 442427541.

145724244 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

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, 6071832 + ... + 6071855.

It is an arithmetic number, because the mean of its divisors is an integer number (28335272).

Almost surely, 2^145724244 is an apocalyptic number.

It is an amenable number.

145724244 is an abundant number, since it is smaller than the sum of its proper divisors (194299020).

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

145724244 is a wasteful number, since it uses less digits than its factorization.

145724244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12143694 (or 12143692 counting only the distinct ones).

The product of its digits is 35840, while the sum is 33.

The square root of 145724244 is about 12071.6297159911. The cubic root of 145724244 is about 526.2320199302.

The spelling of 145724244 in words is "one hundred forty-five million, seven hundred twenty-four thousand, two hundred forty-four".