27485780 has 48 divisors (see below), whose sum is σ = 69444480. Its totient is φ = 8926848.

The previous prime is 27485779. The next prime is 27485789. The reversal of 27485780 is 8758472.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27485789) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2507 + ... + 7826.

It is an arithmetic number, because the mean of its divisors is an integer number (1446760).

Almost surely, 2^27485780 is an apocalyptic number.

27485780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27485780 is an abundant number, since it is smaller than the sum of its proper divisors (41958700).

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

27485780 is a wasteful number, since it uses less digits than its factorization.

27485780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10368 (or 10366 counting only the distinct ones).

The product of its (nonzero) digits is 125440, while the sum is 41.

The square root of 27485780 is about 5242.6882417325. The cubic root of 27485780 is about 301.7885015373.

The spelling of 27485780 in words is "twenty-seven million, four hundred eighty-five thousand, seven hundred eighty".