145885730 has 8 divisors (see below), whose sum is σ = 262594332. Its totient is φ = 58354288.

The previous prime is 145885723. The next prime is 145885739. The reversal of 145885730 is 37588541.

It can be written as a sum of positive squares in 2 ways, for example, as 133656721 + 12229009 = 11561^2 + 3497^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (145885739) 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, 7294277 + ... + 7294296.

Almost surely, 2^145885730 is an apocalyptic number.

145885730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145885730 is a deficient number, since it is larger than the sum of its proper divisors (116708602).

145885730 is a wasteful number, since it uses less digits than its factorization.

145885730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14588580.

The product of its (nonzero) digits is 134400, while the sum is 41.

The square root of 145885730 is about 12078.3165217674. The cubic root of 145885730 is about 526.4263315304.

The spelling of 145885730 in words is "one hundred forty-five million, eight hundred eighty-five thousand, seven hundred thirty".