145207644 has 12 divisors (see below), whose sum is σ = 338817864. Its totient is φ = 48402544.

The previous prime is 145207639. The next prime is 145207663. The reversal of 145207644 is 446702541.

145207644 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, 6050307 + ... + 6050330.

It is an arithmetic number, because the mean of its divisors is an integer number (28234822).

Almost surely, 2^145207644 is an apocalyptic number.

It is an amenable number.

145207644 is an abundant number, since it is smaller than the sum of its proper divisors (193610220).

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

145207644 is a wasteful number, since it uses less digits than its factorization.

145207644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12100644 (or 12100642 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 33.

The square root of 145207644 is about 12050.2134420930. The cubic root of 145207644 is about 525.6094437303.

The spelling of 145207644 in words is "one hundred forty-five million, two hundred seven thousand, six hundred forty-four".