145881392 has 40 divisors (see below), whose sum is σ = 298671360. Its totient is φ = 68834880.

The previous prime is 145881371. The next prime is 145881427. The reversal of 145881392 is 293188541.

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, 93773 + ... + 95315.

It is an arithmetic number, because the mean of its divisors is an integer number (7466784).

Almost surely, 2^145881392 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 145881392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149335680).

145881392 is an abundant number, since it is smaller than the sum of its proper divisors (152789968).

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

145881392 is a wasteful number, since it uses less digits than its factorization.

145881392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1881 (or 1875 counting only the distinct ones).

The product of its digits is 69120, while the sum is 41.

The square root of 145881392 is about 12078.1369424262. The cubic root of 145881392 is about 526.4211136107.

The spelling of 145881392 in words is "one hundred forty-five million, eight hundred eighty-one thousand, three hundred ninety-two".