145103844 has 48 divisors (see below), whose sum is σ = 348606720. Its totient is φ = 46949280.

The previous prime is 145103821. The next prime is 145103911. The reversal of 145103844 is 448301541.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91579 + ... + 93149.

It is an arithmetic number, because the mean of its divisors is an integer number (7262640).

Almost surely, 2^145103844 is an apocalyptic number.

It is an amenable number.

145103844 is an abundant number, since it is smaller than the sum of its proper divisors (203502876).

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

145103844 is a wasteful number, since it uses less digits than its factorization.

145103844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1800 (or 1798 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 145103844 is about 12045.9056944673. The cubic root of 145103844 is about 525.4841719379.

The spelling of 145103844 in words is "one hundred forty-five million, one hundred three thousand, eight hundred forty-four".