145024220 has 48 divisors (see below), whose sum is σ = 333099648. Its totient is φ = 52599360.

The previous prime is 145024213. The next prime is 145024237. The reversal of 145024220 is 22420541.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 145024192 and 145024201.

It is a congruent 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 15 ways as a sum of consecutive naturals, for example, 128579 + ... + 129701.

It is an arithmetic number, because the mean of its divisors is an integer number (6939576).

Almost surely, 2^145024220 is an apocalyptic number.

145024220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145024220 is an abundant number, since it is smaller than the sum of its proper divisors (188075428).

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

145024220 is a wasteful number, since it uses less digits than its factorization.

145024220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1730 (or 1728 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 145024220 is about 12042.6002175610. The cubic root of 145024220 is about 525.3880366319.

Adding to 145024220 its reverse (22420541), we get a palindrome (167444761).

The spelling of 145024220 in words is "one hundred forty-five million, twenty-four thousand, two hundred twenty".