28747835 has 8 divisors (see below), whose sum is σ = 34538400. Its totient is φ = 22970944.

The previous prime is 28747813. The next prime is 28747837. The reversal of 28747835 is 53874782.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 28747835 - 2¹⁰ = 28746811 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28747837) 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, 1991 + ... + 7839.

It is an arithmetic number, because the mean of its divisors is an integer number (4317300).

Almost surely, 2^28747835 is an apocalyptic number.

28747835 is a deficient number, since it is larger than the sum of its proper divisors (5790565).

28747835 is an equidigital number, since it uses as much as digits as its factorization.

28747835 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6837.

The product of its digits is 376320, while the sum is 44.

The square root of 28747835 is about 5361.7007562899. The cubic root of 28747835 is about 306.3385938327.

The spelling of 28747835 in words is "twenty-eight million, seven hundred forty-seven thousand, eight hundred thirty-five".