28546770087 has 32 divisors (see below), whose sum is σ = 46692092160. Its totient is φ = 17092611360.

The previous prime is 28546770079. The next prime is 28546770121. The reversal of 28546770087 is 78007764582.

It is a happy number.

28546770087 is a `hidden beast` number, since 28 + 546 + 7 + 70 + 0 + 8 + 7 = 666.

It is not a de Polignac number, because 28546770087 - 2³ = 28546770079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28546770587) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 554368 + ... + 603669.

It is an arithmetic number, because the mean of its divisors is an integer number (1459127880).

Almost surely, 2^28546770087 is an apocalyptic number.

28546770087 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

28546770087 is a deficient number, since it is larger than the sum of its proper divisors (18145322073).

28546770087 is a wasteful number, since it uses less digits than its factorization.

28546770087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1158140 (or 1158134 counting only the distinct ones).

The product of its (nonzero) digits is 5268480, while the sum is 54.

The spelling of 28546770087 in words is "twenty-eight billion, five hundred forty-six million, seven hundred seventy thousand, eighty-seven".