28830711 has 16 divisors (see below), whose sum is σ = 47312384. Its totient is φ = 15207264.

The previous prime is 28830709. The next prime is 28830719. The reversal of 28830711 is 11703882.

It is a happy number.

It is not a de Polignac number, because 28830711 - 2¹ = 28830709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28830719) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52531 + ... + 53076.

It is an arithmetic number, because the mean of its divisors is an integer number (2957024).

Almost surely, 2^28830711 is an apocalyptic number.

28830711 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

28830711 is a deficient number, since it is larger than the sum of its proper divisors (18481673).

28830711 is a wasteful number, since it uses less digits than its factorization.

28830711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105630.

The product of its (nonzero) digits is 2688, while the sum is 30.

The square root of 28830711 is about 5369.4237120943. The cubic root of 28830711 is about 306.6326885532.

The spelling of 28830711 in words is "twenty-eight million, eight hundred thirty thousand, seven hundred eleven".