145216216 has 8 divisors (see below), whose sum is σ = 272280420. Its totient is φ = 72608104.

The previous prime is 145216177. The next prime is 145216241. The reversal of 145216216 is 612612541.

145216216 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 (8).

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9076006 + ... + 9076021.

Almost surely, 2^145216216 is an apocalyptic number.

It is an amenable number.

145216216 is a deficient number, since it is larger than the sum of its proper divisors (127064204).

145216216 is a wasteful number, since it uses less digits than its factorization.

145216216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18152033 (or 18152029 counting only the distinct ones).

The product of its digits is 2880, while the sum is 28.

The square root of 145216216 is about 12050.5691151912. The cubic root of 145216216 is about 525.6197862426.

Adding to 145216216 its reverse (612612541), we get a palindrome (757828757).

The spelling of 145216216 in words is "one hundred forty-five million, two hundred sixteen thousand, two hundred sixteen".