145781024 has 24 divisors (see below), whose sum is σ = 287276220. Its totient is φ = 72822016.

The previous prime is 145781023. The next prime is 145781039. The reversal of 145781024 is 420187541.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 145636624 + 144400 = 12068^2 + 380^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (145781023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61982 + ... + 64290.

Almost surely, 2^145781024 is an apocalyptic number.

It is an amenable number.

145781024 is a deficient number, since it is larger than the sum of its proper divisors (141495196).

145781024 is a wasteful number, since it uses less digits than its factorization.

145781024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4292 (or 4284 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 145781024 is about 12073.9812820792. The cubic root of 145781024 is about 526.3003580767.

The spelling of 145781024 in words is "one hundred forty-five million, seven hundred eighty-one thousand, twenty-four".