28867463477 has 4 divisors (see below), whose sum is σ = 30386803680. Its totient is φ = 27348123276.

The previous prime is 28867463447. The next prime is 28867463483. The reversal of 28867463477 is 77436476882.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 77436476882 = 2 ⋅38718238441.

It is a cyclic number.

It is not a de Polignac number, because 28867463477 - 2²⁴ = 28850686261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28867463447) 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, 759670073 + ... + 759670110.

It is an arithmetic number, because the mean of its divisors is an integer number (7596700920).

Almost surely, 2^28867463477 is an apocalyptic number.

It is an amenable number.

28867463477 is a deficient number, since it is larger than the sum of its proper divisors (1519340203).

28867463477 is a wasteful number, since it uses less digits than its factorization.

28867463477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1519340202.

The product of its digits is 75866112, while the sum is 62.

The spelling of 28867463477 in words is "twenty-eight billion, eight hundred sixty-seven million, four hundred sixty-three thousand, four hundred seventy-seven".