28624455897 has 16 divisors (see below), whose sum is σ = 38512195008. Its totient is φ = 18909918720.

The previous prime is 28624455859. The next prime is 28624455911. The reversal of 28624455897 is 79855442682.

It is not a de Polignac number, because 28624455897 - 2⁸ = 28624455641 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28624455897.

It is not an unprimeable number, because it can be changed into a prime (28624451897) 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, 2622822 + ... + 2633712.

It is an arithmetic number, because the mean of its divisors is an integer number (2407012188).

Almost surely, 2^28624455897 is an apocalyptic number.

It is an amenable number.

28624455897 is a deficient number, since it is larger than the sum of its proper divisors (9887739111).

28624455897 is a wasteful number, since it uses less digits than its factorization.

28624455897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18760.

The product of its digits is 38707200, while the sum is 60.

The spelling of 28624455897 in words is "twenty-eight billion, six hundred twenty-four million, four hundred fifty-five thousand, eight hundred ninety-seven".