145870730 has 8 divisors (see below), whose sum is σ = 262567332. Its totient is φ = 58348288.

The previous prime is 145870729. The next prime is 145870759. The reversal of 145870730 is 37078541.

145870730 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 122124601 + 23746129 = 11051^2 + 4873^2 .

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

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, 7293527 + ... + 7293546.

Almost surely, 2^145870730 is an apocalyptic number.

145870730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145870730 is a deficient number, since it is larger than the sum of its proper divisors (116696602).

145870730 is a wasteful number, since it uses less digits than its factorization.

145870730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14587080.

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 145870730 is about 12077.6955583422. The cubic root of 145870730 is about 526.4082884916.

The spelling of 145870730 in words is "one hundred forty-five million, eight hundred seventy thousand, seven hundred thirty".