145220322 has 32 divisors (see below), whose sum is σ = 313568640. Its totient is φ = 44570880.

The previous prime is 145220269. The next prime is 145220329. The reversal of 145220322 is 223022541.

145220322 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (145220329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32122 + ... + 36362.

It is an arithmetic number, because the mean of its divisors is an integer number (9799020).

Almost surely, 2^145220322 is an apocalyptic number.

145220322 is an abundant number, since it is smaller than the sum of its proper divisors (168348318).

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

145220322 is a wasteful number, since it uses less digits than its factorization.

145220322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4698.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 145220322 is about 12050.7394793847. The cubic root of 145220322 is about 525.6247401762.

Adding to 145220322 its reverse (223022541), we get a palindrome (368242863).

The spelling of 145220322 in words is "one hundred forty-five million, two hundred twenty thousand, three hundred twenty-two".