27802457388 has 24 divisors (see below), whose sum is σ = 72080445360. Its totient is φ = 9267485760.

The previous prime is 27802457387. The next prime is 27802457393. The reversal of 27802457388 is 88375420872.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (27802457387) 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 in 7 ways as a sum of consecutive naturals, for example, 128714973 + ... + 128715188.

It is an arithmetic number, because the mean of its divisors is an integer number (3003351890).

Almost surely, 2^27802457388 is an apocalyptic number.

It is an amenable number.

27802457388 is an abundant number, since it is smaller than the sum of its proper divisors (44277987972).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27802457388 is a wasteful number, since it uses less digits than its factorization.

27802457388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257430174 (or 257430166 counting only the distinct ones).

The product of its (nonzero) digits is 6021120, while the sum is 54.

The spelling of 27802457388 in words is "twenty-seven billion, eight hundred two million, four hundred fifty-seven thousand, three hundred eighty-eight".