145332730 has 8 divisors (see below), whose sum is σ = 261598932. Its totient is φ = 58133088.

The previous prime is 145332709. The next prime is 145332749. The reversal of 145332730 is 37233541.

It can be written as a sum of positive squares in 2 ways, for example, as 133888041 + 11444689 = 11571^2 + 3383^2 .

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

It is a super-3 number, since 3×145332730³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7266627 + ... + 7266646.

Almost surely, 2^145332730 is an apocalyptic number.

145332730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145332730 is a deficient number, since it is larger than the sum of its proper divisors (116266202).

145332730 is a wasteful number, since it uses less digits than its factorization.

145332730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14533280.

The product of its (nonzero) digits is 7560, while the sum is 28.

The square root of 145332730 is about 12055.4025233503. The cubic root of 145332730 is about 525.7603253954.

The spelling of 145332730 in words is "one hundred forty-five million, three hundred thirty-two thousand, seven hundred thirty".