28162890757 has 8 divisors (see below), whose sum is σ = 29193016320. Its totient is φ = 27140368080.

The previous prime is 28162890739. The next prime is 28162890781. The reversal of 28162890757 is 75709826182.

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 28162890757 - 2¹⁹ = 28162366469 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28162890698 and 28162890707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28162890737) 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, 1893178 + ... + 1907995.

It is an arithmetic number, because the mean of its divisors is an integer number (3649127040).

Almost surely, 2^28162890757 is an apocalyptic number.

It is an amenable number.

28162890757 is a deficient number, since it is larger than the sum of its proper divisors (1030125563).

28162890757 is a wasteful number, since it uses less digits than its factorization.

28162890757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3801443.

The product of its (nonzero) digits is 3386880, while the sum is 55.

The spelling of 28162890757 in words is "twenty-eight billion, one hundred sixty-two million, eight hundred ninety thousand, seven hundred fifty-seven".