27434840 has 32 divisors (see below), whose sum is σ = 63046080. Its totient is φ = 10739712.

The previous prime is 27434819. The next prime is 27434843. The reversal of 27434840 is 4843472.

It is a junction number, because it is equal to n+sod(n) for n = 27434797 and 27434806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27434843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5417 + ... + 9176.

It is an arithmetic number, because the mean of its divisors is an integer number (1970190).

Almost surely, 2^27434840 is an apocalyptic number.

27434840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27434840 is an abundant number, since it is smaller than the sum of its proper divisors (35611240).

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

27434840 is a wasteful number, since it uses less digits than its factorization.

27434840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14651 (or 14647 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 32.

The square root of 27434840 is about 5237.8277940383. The cubic root of 27434840 is about 301.6019491556.

The spelling of 27434840 in words is "twenty-seven million, four hundred thirty-four thousand, eight hundred forty".