145306218 has 16 divisors (see below), whose sum is σ = 292075200. Its totient is φ = 48191616.

The previous prime is 145306177. The next prime is 145306229. The reversal of 145306218 is 812603541.

145306218 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×145306218² = 42227793978927048, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59655 + ... + 62042.

It is an arithmetic number, because the mean of its divisors is an integer number (18254700).

Almost surely, 2^145306218 is an apocalyptic number.

145306218 is an abundant number, since it is smaller than the sum of its proper divisors (146768982).

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

145306218 is a wasteful number, since it uses less digits than its factorization.

145306218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121901.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 145306218 is about 12054.3028832032. The cubic root of 145306218 is about 525.7283532318.

Adding to 145306218 its reverse (812603541), we get a palindrome (957909759).

The spelling of 145306218 in words is "one hundred forty-five million, three hundred six thousand, two hundred eighteen".