2897657923728 has 40 divisors (see below), whose sum is σ = 7485720638176.
Its totient is φ = 965872512000.
The previous prime is 2897657923723. The next prime is 2897657923729. The reversal of 2897657923728 is 8273297567982.
It is a self number, because there is not a number n which added to its sum of digits gives 2897657923728.
It is not an unprimeable number, because it can be changed into a prime (2897657923723) 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, 3420543 + ... + 4182753.
Almost surely, 22897657923728 is an apocalyptic number.
It is an amenable number.
2897657923728 is an abundant number, since it is smaller than the sum of its proper divisors (4588062714448).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
2897657923728 is a wasteful number, since it uses less digits than its factorization.
2897657923728 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 841423 (or 841417 counting only the distinct ones).
The product of its digits is 1280240640, while the sum is 75.
The spelling of 2897657923728 in words is "two trillion, eight hundred ninety-seven billion, six hundred fifty-seven million, nine hundred twenty-three thousand, seven hundred twenty-eight".