26988202840 has 32 divisors (see below), whose sum is σ = 60864384960. Its totient is φ = 10770227200.

The previous prime is 26988202823. The next prime is 26988202841. The reversal of 26988202840 is 4820288962.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26988202841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 765481 + ... + 799960.

It is an arithmetic number, because the mean of its divisors is an integer number (1902012030).

Almost surely, 2^26988202840 is an apocalyptic number.

26988202840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26988202840 is an abundant number, since it is smaller than the sum of its proper divisors (33876182120).

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

26988202840 is a wasteful number, since it uses less digits than its factorization.

26988202840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1565883 (or 1565879 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 49.

The spelling of 26988202840 in words is "twenty-six billion, nine hundred eighty-eight million, two hundred two thousand, eight hundred forty".