145428 has 12 divisors (see below), whose sum is σ = 339360. Its totient is φ = 48472.

The previous prime is 145423. The next prime is 145433. The reversal of 145428 is 824541.

It is an interprime number because it is at equal distance from previous prime (145423) and next prime (145433).

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×145428² = 42298606368, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 145398 and 145407.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 145428.

It is not an unprimeable number, because it can be changed into a prime (145423) by changing a digit.

145428 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6048 + ... + 6071.

It is an arithmetic number, because the mean of its divisors is an integer number (28280).

2¹⁴⁵⁴²⁸ is an apocalyptic number.

It is an amenable number.

145428 is an abundant number, since it is smaller than the sum of its proper divisors (193932).

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

145428 is a wasteful number, since it uses less digits than its factorization.

145428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12126 (or 12124 counting only the distinct ones).

The product of its digits is 1280, while the sum is 24.

The square root of 145428 is about 381.3502327258. The cubic root of 145428 is about 52.5875184233.

Adding to 145428 its reverse (824541), we get a palindrome (969969).

The spelling of 145428 in words is "one hundred forty-five thousand, four hundred twenty-eight".