27948280 has 32 divisors (see below), whose sum is σ = 64350000. Its totient is φ = 10918656.

The previous prime is 27948253. The next prime is 27948281. The reversal of 27948280 is 8284972.

It is a super-2 number, since 2×27948280² = 1562212709916800, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27948281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6405 + ... + 9844.

Almost surely, 2^27948280 is an apocalyptic number.

27948280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27948280 is an abundant number, since it is smaller than the sum of its proper divisors (36401720).

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

27948280 is a wasteful number, since it uses less digits than its factorization.

27948280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16303 (or 16299 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 27948280 is about 5286.6132826224. The cubic root of 27948280 is about 303.4718148300.

The spelling of 27948280 in words is "twenty-seven million, nine hundred forty-eight thousand, two hundred eighty".