28610887388 has 6 divisors (see below), whose sum is σ = 50069052936. Its totient is φ = 14305443692.

The previous prime is 28610887387. The next prime is 28610887391. The reversal of 28610887388 is 88378801682.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28610887387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3576360920 + ... + 3576360927.

It is an arithmetic number, because the mean of its divisors is an integer number (8344842156).

Almost surely, 2^28610887388 is an apocalyptic number.

It is an amenable number.

28610887388 is a deficient number, since it is larger than the sum of its proper divisors (21458165548).

28610887388 is a wasteful number, since it uses less digits than its factorization.

28610887388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7152721851 (or 7152721849 counting only the distinct ones).

The product of its (nonzero) digits is 8257536, while the sum is 59.

The spelling of 28610887388 in words is "twenty-eight billion, six hundred ten million, eight hundred eighty-seven thousand, three hundred eighty-eight".