145709328 has 40 divisors (see below), whose sum is σ = 396229600. Its totient is φ = 46013184.

The previous prime is 145709321. The next prime is 145709339. The reversal of 145709328 is 823907541.

It is not an unprimeable number, because it can be changed into a prime (145709321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78973 + ... + 80796.

It is an arithmetic number, because the mean of its divisors is an integer number (9905740).

Almost surely, 2^145709328 is an apocalyptic number.

It is an amenable number.

145709328 is an abundant number, since it is smaller than the sum of its proper divisors (250520272).

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

145709328 is a wasteful number, since it uses less digits than its factorization.

145709328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159799 (or 159793 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 145709328 is about 12071.0118879902. The cubic root of 145709328 is about 526.2140646826.

The spelling of 145709328 in words is "one hundred forty-five million, seven hundred nine thousand, three hundred twenty-eight".