28762439 has 2 divisors, whose sum is σ = 28762440. Its totient is φ = 28762438.

The previous prime is 28762429. The next prime is 28762457. The reversal of 28762439 is 93426782.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28762439 - 2⁴ = 28762423 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28762396 and 28762405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28762429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14381219 + 14381220.

It is an arithmetic number, because the mean of its divisors is an integer number (14381220).

Almost surely, 2^28762439 is an apocalyptic number.

28762439 is a deficient number, since it is larger than the sum of its proper divisors (1).

28762439 is an equidigital number, since it uses as much as digits as its factorization.

28762439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 41.

The square root of 28762439 is about 5363.0624646745. The cubic root of 28762439 is about 306.3904587409.

It can be divided in two parts, 287 and 62439, that added together give a palindrome (62726).

The spelling of 28762439 in words is "twenty-eight million, seven hundred sixty-two thousand, four hundred thirty-nine".