145320404 has 12 divisors (see below), whose sum is σ = 254419200. Its totient is φ = 72629208.

The previous prime is 145320377. The next prime is 145320407. The reversal of 145320404 is 404023541.

It is a super-2 number, since 2×145320404² = 42236039637446432, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 145320404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145320407) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 5207 + ... + 17825.

It is an arithmetic number, because the mean of its divisors is an integer number (21201600).

Almost surely, 2^145320404 is an apocalyptic number.

It is an amenable number.

145320404 is a deficient number, since it is larger than the sum of its proper divisors (109098796).

145320404 is a wasteful number, since it uses less digits than its factorization.

145320404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15502 (or 15500 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 145320404 is about 12054.8912894310. The cubic root of 145320404 is about 525.7454613314.

Adding to 145320404 its reverse (404023541), we get a palindrome (549343945).

The spelling of 145320404 in words is "one hundred forty-five million, three hundred twenty thousand, four hundred four".