28787815850054 has 8 divisors (see below), whose sum is σ = 43186464358320. Its totient is φ = 14392327730616.

The previous prime is 28787815850051. The next prime is 28787815850153. The reversal of 28787815850054 is 45005851878782.

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

It is a super-2 number, since 2×28787815850054² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28787815850051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 790074434 + ... + 790110869.

It is an arithmetic number, because the mean of its divisors is an integer number (5398308044790).

Almost surely, 2^{28787815850054} is an apocalyptic number.

28787815850054 is a deficient number, since it is larger than the sum of its proper divisors (14398648508266).

28787815850054 is a wasteful number, since it uses less digits than its factorization.

28787815850054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1580194414.

The product of its (nonzero) digits is 200704000, while the sum is 68.

The spelling of 28787815850054 in words is "twenty-eight trillion, seven hundred eighty-seven billion, eight hundred fifteen million, eight hundred fifty thousand, fifty-four".