28977042202 has 4 divisors (see below), whose sum is σ = 43465563306. Its totient is φ = 14488521100.

The previous prime is 28977042197. The next prime is 28977042203. The reversal of 28977042202 is 20224077982.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 28388543121 + 588499081 = 168489^2 + 24259^2 .

It is not an unprimeable number, because it can be changed into a prime (28977042203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7244260549 + ... + 7244260552.

Almost surely, 2^28977042202 is an apocalyptic number.

28977042202 is a deficient number, since it is larger than the sum of its proper divisors (14488521104).

28977042202 is a wasteful number, since it uses less digits than its factorization.

28977042202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14488521103.

The product of its (nonzero) digits is 225792, while the sum is 43.

The spelling of 28977042202 in words is "twenty-eight billion, nine hundred seventy-seven million, forty-two thousand, two hundred two".