27680430 has 16 divisors (see below), whose sum is σ = 66433104. Its totient is φ = 7381440.

The previous prime is 27680423. The next prime is 27680449. The reversal of 27680430 is 3408672.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 922681 = 27680430 / (2 + 7 + 6 + 8 + 0 + 4 + 3 + 0).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 461311 + ... + 461370.

It is an arithmetic number, because the mean of its divisors is an integer number (4152069).

Almost surely, 2^27680430 is an apocalyptic number.

27680430 is an abundant number, since it is smaller than the sum of its proper divisors (38752674).

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

27680430 is a wasteful number, since it uses less digits than its factorization.

27680430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 922691.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 27680430 is about 5261.2194403959. The cubic root of 27680430 is about 302.4992327463.

The spelling of 27680430 in words is "twenty-seven million, six hundred eighty thousand, four hundred thirty".