145345716 has 72 divisors (see below), whose sum is σ = 396441864. Its totient is φ = 44728320.

The previous prime is 145345703. The next prime is 145345721. The reversal of 145345716 is 617543541.

It can be written as a sum of positive squares in 4 ways, for example, as 75690000 + 69655716 = 8700^2 + 8346^2 .

It is a super-2 number, since 2×145345716² = 42250754319105312, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

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 23 ways as a sum of consecutive naturals, for example, 30196 + ... + 34676.

It is an arithmetic number, because the mean of its divisors is an integer number (5506137).

Almost surely, 2^145345716 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145345716, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (198220932).

145345716 is an abundant number, since it is smaller than the sum of its proper divisors (251096148).

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

145345716 is a wasteful number, since it uses less digits than its factorization.

145345716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4561 (or 4556 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 145345716 is about 12055.9411080181. The cubic root of 145345716 is about 525.7759844518.

The spelling of 145345716 in words is "one hundred forty-five million, three hundred forty-five thousand, seven hundred sixteen".