28457758087 has 8 divisors (see below), whose sum is σ = 32115338640. Its totient is φ = 24978596160.

The previous prime is 28457758037. The next prime is 28457758103. The reversal of 28457758087 is 78085775482.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 28457758087 - 2⁷ = 28457757959 is a prime.

It is a super-3 number, since 3×28457758087³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28457758037) 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, 44604318 + ... + 44604955.

It is an arithmetic number, because the mean of its divisors is an integer number (4014417330).

Almost surely, 2^28457758087 is an apocalyptic number.

28457758087 is a deficient number, since it is larger than the sum of its proper divisors (3657580553).

28457758087 is a wasteful number, since it uses less digits than its factorization.

28457758087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89209313.

The product of its (nonzero) digits is 35123200, while the sum is 61.

The spelling of 28457758087 in words is "twenty-eight billion, four hundred fifty-seven million, seven hundred fifty-eight thousand, eighty-seven".