145745744 has 10 divisors (see below), whose sum is σ = 282382410. Its totient is φ = 72872864.

The previous prime is 145745729. The next prime is 145745749. The reversal of 145745744 is 447547541.

It can be written as a sum of positive squares in only one way, i.e., 112105744 + 33640000 = 10588^2 + 5800^2 .

It is a super-2 number, since 2×145745744² = 42483643788227072, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145745749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4554539 + ... + 4554570.

It is an arithmetic number, because the mean of its divisors is an integer number (28238241).

Almost surely, 2^145745744 is an apocalyptic number.

It is an amenable number.

145745744 is a deficient number, since it is larger than the sum of its proper divisors (136636666).

145745744 is an equidigital number, since it uses as much as digits as its factorization.

145745744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9109117 (or 9109111 counting only the distinct ones).

The product of its digits is 313600, while the sum is 41.

The square root of 145745744 is about 12072.5202008528. The cubic root of 145745744 is about 526.2578985618.

The spelling of 145745744 in words is "one hundred forty-five million, seven hundred forty-five thousand, seven hundred forty-four".