145338856 has 32 divisors (see below), whose sum is σ = 296188200. Its totient is φ = 66458880.

The previous prime is 145338833. The next prime is 145338877. The reversal of 145338856 is 658833541.

It can be written as a sum of positive squares in 4 ways, for example, as 76282756 + 69056100 = 8734^2 + 8310^2 .

It is a super-2 number, since 2×145338856² = 42246766126777472, 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 7 ways as a sum of consecutive naturals, for example, 4926 + ... + 17746.

Almost surely, 2^145338856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145338856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148094100).

145338856 is an abundant number, since it is smaller than the sum of its proper divisors (150849344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145338856 is a wasteful number, since it uses less digits than its factorization.

145338856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12949 (or 12945 counting only the distinct ones).

The product of its digits is 345600, while the sum is 43.

The square root of 145338856 is about 12055.6565976308. The cubic root of 145338856 is about 525.7677124960.

The spelling of 145338856 in words is "one hundred forty-five million, three hundred thirty-eight thousand, eight hundred fifty-six".