145732858 has 4 divisors (see below), whose sum is σ = 218599290. Its totient is φ = 72866428.

The previous prime is 145732841. The next prime is 145732871. The reversal of 145732858 is 858237541.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 99261369 + 46471489 = 9963^2 + 6817^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36433213 + ... + 36433216.

Almost surely, 2^145732858 is an apocalyptic number.

145732858 is a deficient number, since it is larger than the sum of its proper divisors (72866432).

145732858 is an equidigital number, since it uses as much as digits as its factorization.

145732858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72866431.

The product of its digits is 268800, while the sum is 43.

The square root of 145732858 is about 12071.9864976730. The cubic root of 145732858 is about 526.2423885396.

The spelling of 145732858 in words is "one hundred forty-five million, seven hundred thirty-two thousand, eight hundred fifty-eight".