27830780 has 24 divisors (see below), whose sum is σ = 58910208. Its totient is φ = 11043648.

The previous prime is 27830767. The next prime is 27830791. The reversal of 27830780 is 8703872.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 27830780.

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, 2939 + ... + 8018.

It is an arithmetic number, because the mean of its divisors is an integer number (2454592).

Almost surely, 2^27830780 is an apocalyptic number.

27830780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27830780 is an abundant number, since it is smaller than the sum of its proper divisors (31079428).

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

27830780 is a wasteful number, since it uses less digits than its factorization.

27830780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11093 (or 11091 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 27830780 is about 5275.4886029637. The cubic root of 27830780 is about 303.0459326141.

The spelling of 27830780 in words is "twenty-seven million, eight hundred thirty thousand, seven hundred eighty".