34280728641 has 24 divisors (see below), whose sum is σ = 50962635360. Its totient is φ = 22195757376.

The previous prime is 34280728637. The next prime is 34280728661. The reversal of 34280728641 is 14682708243.

It is a happy number.

It is not a de Polignac number, because 34280728641 - 2² = 34280728637 is a prime.

It is not an unprimeable number, because it can be changed into a prime (34280728631) 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, 344836 + ... + 432981.

It is an arithmetic number, because the mean of its divisors is an integer number (2123443140).

Almost surely, 2^34280728641 is an apocalyptic number.

It is an amenable number.

34280728641 is a deficient number, since it is larger than the sum of its proper divisors (16681906719).

34280728641 is a wasteful number, since it uses less digits than its factorization.

34280728641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777965 (or 777962 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 45.

The spelling of 34280728641 in words is "thirty-four billion, two hundred eighty million, seven hundred twenty-eight thousand, six hundred forty-one".