4028523 has 8 divisors (see below), whose sum is σ = 5516688. Its totient is φ = 2613024.

The previous prime is 4028491. The next prime is 4028533. The reversal of 4028523 is 3258204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4028523 - 2⁵ = 4028491 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 4028493 and 4028502.

It is not an unprimeable number, because it can be changed into a prime (4028533) 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, 18036 + ... + 18257.

It is an arithmetic number, because the mean of its divisors is an integer number (689586).

Almost surely, 2^4028523 is an apocalyptic number.

4028523 is a deficient number, since it is larger than the sum of its proper divisors (1488165).

4028523 is a wasteful number, since it uses less digits than its factorization.

4028523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36333.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 4028523 is about 2007.1180832228. The cubic root of 4028523 is about 159.1165238954.

The spelling of 4028523 in words is "four million, twenty-eight thousand, five hundred twenty-three".