145144416 has 24 divisors (see below), whose sum is σ = 381004344. Its totient is φ = 48381440.

The previous prime is 145144411. The next prime is 145144427. The reversal of 145144416 is 614441541.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145144411) 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, 755865 + ... + 756056.

It is an arithmetic number, because the mean of its divisors is an integer number (15875181).

Almost surely, 2^145144416 is an apocalyptic number.

145144416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

145144416 is an abundant number, since it is smaller than the sum of its proper divisors (235859928).

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

145144416 is a wasteful number, since it uses less digits than its factorization.

145144416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1511934 (or 1511926 counting only the distinct ones).

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

The square root of 145144416 is about 12047.5896344456. The cubic root of 145144416 is about 525.5331436639.

Adding to 145144416 its reverse (614441541), we get a palindrome (759585957).

The spelling of 145144416 in words is "one hundred forty-five million, one hundred forty-four thousand, four hundred sixteen".