145212320 has 48 divisors (see below), whose sum is σ = 374256288. Its totient is φ = 52803840.

The previous prime is 145212293. The next prime is 145212359. The reversal of 145212320 is 23212541.

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 = 145212292 and 145212301.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39494 + ... + 43013.

It is an arithmetic number, because the mean of its divisors is an integer number (7797006).

Almost surely, 2^145212320 is an apocalyptic number.

145212320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145212320 is an abundant number, since it is smaller than the sum of its proper divisors (229043968).

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

145212320 is a wasteful number, since it uses less digits than its factorization.

145212320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82533 (or 82525 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 145212320 is about 12050.4074619907. The cubic root of 145212320 is about 525.6150855898.

Adding to 145212320 its reverse (23212541), we get a palindrome (168424861).

The spelling of 145212320 in words is "one hundred forty-five million, two hundred twelve thousand, three hundred twenty".