145809896 has 16 divisors (see below), whose sum is σ = 280783140. Its totient is φ = 70934400.

The previous prime is 145809877. The next prime is 145809907. The reversal of 145809896 is 698908541.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 106296100 + 39513796 = 10310^2 + 6286^2 .

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, 246005 + ... + 246596.

Almost surely, 2^145809896 is an apocalyptic number.

It is an amenable number.

145809896 is a deficient number, since it is larger than the sum of its proper divisors (134973244).

145809896 is a wasteful number, since it uses less digits than its factorization.

145809896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492644 (or 492640 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 50.

The square root of 145809896 is about 12075.1768517070. The cubic root of 145809896 is about 526.3351004606.

The spelling of 145809896 in words is "one hundred forty-five million, eight hundred nine thousand, eight hundred ninety-six".