145213228 has 6 divisors (see below), whose sum is σ = 254123156. Its totient is φ = 72606612.

The previous prime is 145213199. The next prime is 145213291. The reversal of 145213228 is 822312541.

145213228 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 145213196 and 145213205.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18151650 + ... + 18151657.

Almost surely, 2^145213228 is an apocalyptic number.

It is an amenable number.

145213228 is a deficient number, since it is larger than the sum of its proper divisors (108909928).

145213228 is a wasteful number, since it uses less digits than its factorization.

145213228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36303311 (or 36303309 counting only the distinct ones).

The product of its digits is 3840, while the sum is 28.

The square root of 145213228 is about 12050.4451370064. The cubic root of 145213228 is about 525.6161811294.

Adding to 145213228 its reverse (822312541), we get a palindrome (967525769).

The spelling of 145213228 in words is "one hundred forty-five million, two hundred thirteen thousand, two hundred twenty-eight".