145720322 has 16 divisors (see below), whose sum is σ = 239836032. Its totient is φ = 65851920.

The previous prime is 145720321. The next prime is 145720349. The reversal of 145720322 is 223027541.

It is a junction number, because it is equal to n+sod(n) for n = 145720291 and 145720300.

It is not an unprimeable number, because it can be changed into a prime (145720321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15338 + ... + 22949.

It is an arithmetic number, because the mean of its divisors is an integer number (14989752).

Almost surely, 2^145720322 is an apocalyptic number.

145720322 is a deficient number, since it is larger than the sum of its proper divisors (94115710).

145720322 is a wasteful number, since it uses less digits than its factorization.

145720322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38473.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 145720322 is about 12071.4672679008. The cubic root of 145720322 is about 526.2272989119.

Adding to 145720322 its reverse (223027541), we get a palindrome (368747863).

The spelling of 145720322 in words is "one hundred forty-five million, seven hundred twenty thousand, three hundred twenty-two".