28376743 has 4 divisors (see below), whose sum is σ = 29143720. Its totient is φ = 27609768.

The previous prime is 28376741. The next prime is 28376759. The reversal of 28376743 is 34767382.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28376743 - 2¹ = 28376741 is a prime.

It is a super-3 number, since 3×28376743³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28376696 and 28376705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28376741) 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, 383433 + ... + 383506.

It is an arithmetic number, because the mean of its divisors is an integer number (7285930).

Almost surely, 2^28376743 is an apocalyptic number.

28376743 is a deficient number, since it is larger than the sum of its proper divisors (766977).

28376743 is an equidigital number, since it uses as much as digits as its factorization.

28376743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766976.

The product of its digits is 169344, while the sum is 40.

The square root of 28376743 is about 5326.9825417397. The cubic root of 28376743 is about 305.0147551762.

The spelling of 28376743 in words is "twenty-eight million, three hundred seventy-six thousand, seven hundred forty-three".