28709384510 has 16 divisors (see below), whose sum is σ = 51807067776. Its totient is φ = 11454825888.

The previous prime is 28709384497. The next prime is 28709384513. The reversal of 28709384510 is 1548390782.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28709384513) 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, 3611822 + ... + 3619761.

It is an arithmetic number, because the mean of its divisors is an integer number (3237941736).

Almost surely, 2^28709384510 is an apocalyptic number.

28709384510 is a deficient number, since it is larger than the sum of its proper divisors (23097683266).

28709384510 is a wasteful number, since it uses less digits than its factorization.

28709384510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7231987.

The product of its (nonzero) digits is 483840, while the sum is 47.

The spelling of 28709384510 in words is "twenty-eight billion, seven hundred nine million, three hundred eighty-four thousand, five hundred ten".