145703378 has 8 divisors (see below), whose sum is σ = 219254268. Its totient is φ = 72618624.

The previous prime is 145703351. The next prime is 145703407. The reversal of 145703378 is 873307541.

It can be written as a sum of positive squares in 2 ways, for example, as 116791249 + 28912129 = 10807^2 + 5377^2 .

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

It is a super-2 number, since 2×145703378² = 42458948721221768, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115751 + ... + 117002.

Almost surely, 2^145703378 is an apocalyptic number.

145703378 is a deficient number, since it is larger than the sum of its proper divisors (73550890).

145703378 is a wasteful number, since it uses less digits than its factorization.

145703378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233068.

The product of its (nonzero) digits is 70560, while the sum is 38.

The square root of 145703378 is about 12070.7654272627. The cubic root of 145703378 is about 526.2069019834.

The spelling of 145703378 in words is "one hundred forty-five million, seven hundred three thousand, three hundred seventy-eight".