28703087 has 8 divisors (see below), whose sum is σ = 33360000. Its totient is φ = 24185304.

The previous prime is 28703063. The next prime is 28703093. The reversal of 28703087 is 78030782.

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 28703087 - 2¹² = 28698991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28703387) 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, 34337 + ... + 35162.

It is an arithmetic number, because the mean of its divisors is an integer number (4170000).

Almost surely, 2^28703087 is an apocalyptic number.

28703087 is a deficient number, since it is larger than the sum of its proper divisors (4656913).

28703087 is an equidigital number, since it uses as much as digits as its factorization.

28703087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69565.

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 28703087 is about 5357.5262015225. The cubic root of 28703087 is about 306.1795655318.

The spelling of 28703087 in words is "twenty-eight million, seven hundred three thousand, eighty-seven".