28784666954 has 16 divisors (see below), whose sum is σ = 43340177088. Its totient is φ = 14338011072.

The previous prime is 28784666923. The next prime is 28784666971. The reversal of 28784666954 is 45966648782.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 848099 + ... + 881385.

It is an arithmetic number, because the mean of its divisors is an integer number (2708761068).

Almost surely, 2^28784666954 is an apocalyptic number.

28784666954 is a deficient number, since it is larger than the sum of its proper divisors (14555510134).

28784666954 is a wasteful number, since it uses less digits than its factorization.

28784666954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34909.

The product of its digits is 139345920, while the sum is 65.

The spelling of 28784666954 in words is "twenty-eight billion, seven hundred eighty-four million, six hundred sixty-six thousand, nine hundred fifty-four".