28740035 has 4 divisors (see below), whose sum is σ = 34488048. Its totient is φ = 22992024.

The previous prime is 28740031. The next prime is 28740037. The reversal of 28740035 is 53004782.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 53004782 = 2 ⋅26502391.

It is a cyclic number.

It is not a de Polignac number, because 28740035 - 2² = 28740031 is a prime.

It is a super-2 number, since 2×28740035² = 1651979223602450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28740031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2873999 + ... + 2874008.

It is an arithmetic number, because the mean of its divisors is an integer number (8622012).

Almost surely, 2^28740035 is an apocalyptic number.

28740035 is a deficient number, since it is larger than the sum of its proper divisors (5748013).

28740035 is an equidigital number, since it uses as much as digits as its factorization.

28740035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5748012.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 28740035 is about 5360.9733258057. The cubic root of 28740035 is about 306.3108855761.

The spelling of 28740035 in words is "twenty-eight million, seven hundred forty thousand, thirty-five".