145831028 has 24 divisors (see below), whose sum is σ = 292885824. Its totient is φ = 62236800.

The previous prime is 145831027. The next prime is 145831123. The reversal of 145831028 is 820138541.

It is a junction number, because it is equal to n+sod(n) for n = 145830985 and 145831003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145831027) 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, 4058 + ... + 17553.

It is an arithmetic number, because the mean of its divisors is an integer number (12203576).

Almost surely, 2^145831028 is an apocalyptic number.

It is an amenable number.

145831028 is an abundant number, since it is smaller than the sum of its proper divisors (147054796).

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

145831028 is a wasteful number, since it uses less digits than its factorization.

145831028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21863 (or 21861 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 145831028 is about 12076.0518382458. The cubic root of 145831028 is about 526.3605262064.

Adding to 145831028 its reverse (820138541), we get a palindrome (965969569).

The spelling of 145831028 in words is "one hundred forty-five million, eight hundred thirty-one thousand, twenty-eight".