28626647002 has 4 divisors (see below), whose sum is σ = 42939970506. Its totient is φ = 14313323500.

The previous prime is 28626646921. The next prime is 28626647029. The reversal of 28626647002 is 20074662682.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20074662682 = 2 ⋅10037331341.

It can be written as a sum of positive squares in only one way, i.e., 28608677881 + 17969121 = 169141^2 + 4239^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 28626647002.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7156661749 + ... + 7156661752.

Almost surely, 2^28626647002 is an apocalyptic number.

28626647002 is a deficient number, since it is larger than the sum of its proper divisors (14313323504).

28626647002 is a wasteful number, since it uses less digits than its factorization.

28626647002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14313323503.

The product of its (nonzero) digits is 387072, while the sum is 43.

The spelling of 28626647002 in words is "twenty-eight billion, six hundred twenty-six million, six hundred forty-seven thousand, two".