145184238 has 24 divisors (see below), whose sum is σ = 326217528. Its totient is φ = 48394584.

The previous prime is 145184227. The next prime is 145184251. The reversal of 145184238 is 832481541.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 148881 + ... + 149852.

It is an arithmetic number, because the mean of its divisors is an integer number (13592397).

Almost surely, 2^145184238 is an apocalyptic number.

145184238 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

145184238 is an abundant number, since it is smaller than the sum of its proper divisors (181033290).

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

145184238 is an equidigital number, since it uses as much as digits as its factorization.

145184238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298750 (or 298738 counting only the distinct ones).

The product of its digits is 30720, while the sum is 36.

The square root of 145184238 is about 12049.2422168367. The cubic root of 145184238 is about 525.5812012417.

The spelling of 145184238 in words is "one hundred forty-five million, one hundred eighty-four thousand, two hundred thirty-eight".