28430465017887 has 24 divisors (see below), whose sum is σ = 41460611349456. Its totient is φ = 18771710407296.

The previous prime is 28430465017879. The next prime is 28430465017909. The reversal of 28430465017887 is 78871056403482.

It is a happy number.

28430465017887 is a `hidden beast` number, since 2 + 8 + 4 + 3 + 0 + 46 + 501 + 7 + 8 + 87 = 666.

It is not a de Polignac number, because 28430465017887 - 2³ = 28430465017879 is a prime.

It is a super-2 number, since 2×28430465017887² (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 (28430465017837) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3523 + ... + 7540619.

It is an arithmetic number, because the mean of its divisors is an integer number (1727525472894).

Almost surely, 2^{28430465017887} is an apocalyptic number.

28430465017887 is a deficient number, since it is larger than the sum of its proper divisors (13030146331569).

28430465017887 is a wasteful number, since it uses less digits than its factorization.

28430465017887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7541127 (or 7541124 counting only the distinct ones).

The product of its (nonzero) digits is 72253440, while the sum is 63.

The spelling of 28430465017887 in words is "twenty-eight trillion, four hundred thirty billion, four hundred sixty-five million, seventeen thousand, eight hundred eighty-seven".