28398614026 has 8 divisors (see below), whose sum is σ = 42643192644. Its totient is φ = 14184216480.

The previous prime is 28398613993. The next prime is 28398614029. The reversal of 28398614026 is 62041689382.

It can be written as a sum of positive squares in 2 ways, for example, as 28392587001 + 6027025 = 168501^2 + 2455^2 .

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

It is not an unprimeable number, because it can be changed into a prime (28398614029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7542915 + ... + 7546678.

Almost surely, 2^28398614026 is an apocalyptic number.

28398614026 is a deficient number, since it is larger than the sum of its proper divisors (14244578618).

28398614026 is a wasteful number, since it uses less digits than its factorization.

28398614026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15090536.

The product of its (nonzero) digits is 995328, while the sum is 49.

The spelling of 28398614026 in words is "twenty-eight billion, three hundred ninety-eight million, six hundred fourteen thousand, twenty-six".