28390000641 has 8 divisors (see below), whose sum is σ = 37855687200. Its totient is φ = 18925490592.

The previous prime is 28390000579. The next prime is 28390000703. The reversal of 28390000641 is 14600009382.

It is an interprime number because it is at equal distance from previous prime (28390000579) and next prime (28390000703).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28390000641 - 2²⁷ = 28255782913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28390000141) 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, 236191 + ... + 335508.

It is an arithmetic number, because the mean of its divisors is an integer number (4731960900).

Almost surely, 2^28390000641 is an apocalyptic number.

It is an amenable number.

28390000641 is a deficient number, since it is larger than the sum of its proper divisors (9465686559).

28390000641 is a wasteful number, since it uses less digits than its factorization.

28390000641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588255.

The product of its (nonzero) digits is 10368, while the sum is 33.

The spelling of 28390000641 in words is "twenty-eight billion, three hundred ninety million, six hundred forty-one", and thus it is an aban number.