27798000 has 160 divisors (see below), whose sum is σ = 92619072. Its totient is φ = 7168000.

The previous prime is 27797981. The next prime is 27798011. The reversal of 27798000 is 89772.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 245944 + ... + 246056.

Almost surely, 2^27798000 is an apocalyptic number.

27798000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27798000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46309536).

27798000 is an abundant number, since it is smaller than the sum of its proper divisors (64821072).

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

27798000 is a wasteful number, since it uses less digits than its factorization.

27798000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180 (or 164 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 33.

The square root of 27798000 is about 5272.3808663639. The cubic root of 27798000 is about 302.9269067446.

The spelling of 27798000 in words is "twenty-seven million, seven hundred ninety-eight thousand".