28452379 has 4 divisors (see below), whose sum is σ = 28713520. Its totient is φ = 28191240.

The previous prime is 28452377. The next prime is 28452397. The reversal of 28452379 is 97325482.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97325482 = 2 ⋅48662741.

It is a cyclic number.

It is not a de Polignac number, because 28452379 - 2¹ = 28452377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28452377) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130407 + ... + 130624.

It is an arithmetic number, because the mean of its divisors is an integer number (7178380).

Almost surely, 2^28452379 is an apocalyptic number.

28452379 is a deficient number, since it is larger than the sum of its proper divisors (261141).

28452379 is a wasteful number, since it uses less digits than its factorization.

28452379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261140.

The product of its digits is 120960, while the sum is 40.

The square root of 28452379 is about 5334.0771460488. The cubic root of 28452379 is about 305.2855124549.

The spelling of 28452379 in words is "twenty-eight million, four hundred fifty-two thousand, three hundred seventy-nine".