27720734 has 8 divisors (see below), whose sum is σ = 43769640. Its totient is φ = 13130856.

The previous prime is 27720703. The next prime is 27720739. The reversal of 27720734 is 43702772.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 27720734.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27720739) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 364709 + ... + 364784.

It is an arithmetic number, because the mean of its divisors is an integer number (5471205).

Almost surely, 2^27720734 is an apocalyptic number.

27720734 is a deficient number, since it is larger than the sum of its proper divisors (16048906).

27720734 is a wasteful number, since it uses less digits than its factorization.

27720734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 729514.

The product of its (nonzero) digits is 16464, while the sum is 32.

The square root of 27720734 is about 5265.0483378598. The cubic root of 27720734 is about 302.6459792205.

The spelling of 27720734 in words is "twenty-seven million, seven hundred twenty thousand, seven hundred thirty-four".