27900378 has 96 divisors (see below), whose sum is σ = 70424640. Its totient is φ = 7902720.

The previous prime is 27900371. The next prime is 27900391. The reversal of 27900378 is 87300972.

It is not an unprimeable number, because it can be changed into a prime (27900371) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 246850 + ... + 246962.

It is an arithmetic number, because the mean of its divisors is an integer number (733590).

Almost surely, 2^27900378 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27900378, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35212320).

27900378 is an abundant number, since it is smaller than the sum of its proper divisors (42524262).

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

27900378 is a wasteful number, since it uses less digits than its factorization.

27900378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204 (or 201 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 27900378 is about 5282.0808399721. The cubic root of 27900378 is about 303.2983370110.

The spelling of 27900378 in words is "twenty-seven million, nine hundred thousand, three hundred seventy-eight".