145931528 has 12 divisors (see below), whose sum is σ = 273685695. Its totient is φ = 72948680.

The previous prime is 145931507. The next prime is 145931531. The reversal of 145931528 is 825139541.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 72965764 + 72965764 = 8542^2 + 8542^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=8542.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 145931491 and 145931500.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 32033 + ... + 36303.

Almost surely, 2^145931528 is an apocalyptic number.

It is an amenable number.

145931528 is a deficient number, since it is larger than the sum of its proper divisors (127754167).

145931528 is an frugal number, since it uses more digits than its factorization.

145931528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8548 (or 4273 counting only the distinct ones).

The product of its digits is 43200, while the sum is 38.

The square root of 145931528 is about 12080.2122497910. The cubic root of 145931528 is about 526.4814128845.

The spelling of 145931528 in words is "one hundred forty-five million, nine hundred thirty-one thousand, five hundred twenty-eight".