145778504 has 16 divisors (see below), whose sum is σ = 273635820. Its totient is φ = 72808960.

The previous prime is 145778491. The next prime is 145778513. The reversal of 145778504 is 405877541.

It can be written as a sum of positive squares in 2 ways, for example, as 141657604 + 4120900 = 11902^2 + 2030^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1937 + ... + 17184.

Almost surely, 2^145778504 is an apocalyptic number.

It is an amenable number.

145778504 is a deficient number, since it is larger than the sum of its proper divisors (127857316).

145778504 is a wasteful number, since it uses less digits than its factorization.

145778504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20080 (or 20076 counting only the distinct ones).

The product of its (nonzero) digits is 156800, while the sum is 41.

The square root of 145778504 is about 12073.8769249980. The cubic root of 145778504 is about 526.2973254814.

The spelling of 145778504 in words is "one hundred forty-five million, seven hundred seventy-eight thousand, five hundred four".