28651853830 has 32 divisors (see below), whose sum is σ = 51846619968. Its totient is φ = 11400144000.

The previous prime is 28651853801. The next prime is 28651853831. The reversal of 28651853830 is 3835815682.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28651853831) 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, 1835860 + ... + 1851400.

It is an arithmetic number, because the mean of its divisors is an integer number (1620206874).

Almost surely, 2^28651853830 is an apocalyptic number.

28651853830 is a deficient number, since it is larger than the sum of its proper divisors (23194766138).

28651853830 is a wasteful number, since it uses less digits than its factorization.

28651853830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16512.

The product of its (nonzero) digits is 1382400, while the sum is 49.

The spelling of 28651853830 in words is "twenty-eight billion, six hundred fifty-one million, eight hundred fifty-three thousand, eight hundred thirty".