145220178 has 16 divisors (see below), whose sum is σ = 290574720. Its totient is φ = 48384336.

The previous prime is 145220147. The next prime is 145220191. The reversal of 145220178 is 871022541.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13428 + ... + 21696.

It is an arithmetic number, because the mean of its divisors is an integer number (18160920).

Almost surely, 2^145220178 is an apocalyptic number.

145220178 is an abundant number, since it is smaller than the sum of its proper divisors (145354542).

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

145220178 is a wasteful number, since it uses less digits than its factorization.

145220178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11201.

The product of its (nonzero) digits is 4480, while the sum is 30.

The square root of 145220178 is about 12050.7335046461. The cubic root of 145220178 is about 525.6245664402.

The spelling of 145220178 in words is "one hundred forty-five million, two hundred twenty thousand, one hundred seventy-eight".