145136220 has 48 divisors (see below), whose sum is σ = 407611008. Its totient is φ = 38585920.

The previous prime is 145136177. The next prime is 145136221. The reversal of 145136220 is 22631541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145136221) 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 15 ways as a sum of consecutive naturals, for example, 17335 + ... + 24305.

It is an arithmetic number, because the mean of its divisors is an integer number (8491896).

Almost surely, 2^145136220 is an apocalyptic number.

145136220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145136220 is an abundant number, since it is smaller than the sum of its proper divisors (262474788).

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

145136220 is a wasteful number, since it uses less digits than its factorization.

145136220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7330 (or 7328 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 145136220 is about 12047.2494786154. The cubic root of 145136220 is about 525.5232515604.

Adding to 145136220 its reverse (22631541), we get a palindrome (167767761).

The spelling of 145136220 in words is "one hundred forty-five million, one hundred thirty-six thousand, two hundred twenty".