145621344 has 96 divisors (see below), whose sum is σ = 428391936. Its totient is φ = 42923520.

The previous prime is 145621319. The next prime is 145621361. The reversal of 145621344 is 443126541.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37209 + ... + 40935.

It is an arithmetic number, because the mean of its divisors is an integer number (4462416).

Almost surely, 2^145621344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145621344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (214195968).

145621344 is an abundant number, since it is smaller than the sum of its proper divisors (282770592).

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

145621344 is a wasteful number, since it uses less digits than its factorization.

145621344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3788 (or 3780 counting only the distinct ones).

The product of its digits is 11520, while the sum is 30.

The square root of 145621344 is about 12067.3669041759. The cubic root of 145621344 is about 526.1081283393.

Adding to 145621344 its reverse (443126541), we get a palindrome (588747885).

The spelling of 145621344 in words is "one hundred forty-five million, six hundred twenty-one thousand, three hundred forty-four".