27440730 has 24 divisors (see below), whose sum is σ = 71346132. Its totient is φ = 7317504.

The previous prime is 27440711. The next prime is 27440753. The reversal of 27440730 is 3704472.

It can be written as a sum of positive squares in 2 ways, for example, as 25674489 + 1766241 = 5067^2 + 1329^2 .

It is a junction number, because it is equal to n+sod(n) for n = 27440694 and 27440703.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 152359 + ... + 152538.

Almost surely, 2^27440730 is an apocalyptic number.

27440730 is an abundant number, since it is smaller than the sum of its proper divisors (43905402).

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

27440730 is a wasteful number, since it uses less digits than its factorization.

27440730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304910 (or 304907 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 27.

The square root of 27440730 is about 5238.3900198439. The cubic root of 27440730 is about 301.6235313041.

The spelling of 27440730 in words is "twenty-seven million, four hundred forty thousand, seven hundred thirty".