28341780123 has 8 divisors (see below), whose sum is σ = 37790100288. Its totient is φ = 18893990024.

The previous prime is 28341780113. The next prime is 28341780133. The reversal of 28341780123 is 32108714382.

It is an interprime number because it is at equal distance from previous prime (28341780113) and next prime (28341780133).

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 28341780123 - 2⁵ = 28341780091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28341780113) 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, 16036 + ... + 238622.

It is an arithmetic number, because the mean of its divisors is an integer number (4723762536).

Almost surely, 2^28341780123 is an apocalyptic number.

28341780123 is a deficient number, since it is larger than the sum of its proper divisors (9448320165).

28341780123 is a wasteful number, since it uses less digits than its factorization.

28341780123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265033.

The product of its (nonzero) digits is 64512, while the sum is 39.

The spelling of 28341780123 in words is "twenty-eight billion, three hundred forty-one million, seven hundred eighty thousand, one hundred twenty-three".