27790340 has 24 divisors (see below), whose sum is σ = 58810752. Its totient is φ = 11030240.

The previous prime is 27790307. The next prime is 27790351. The reversal of 27790340 is 4309772.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 27790297 and 27790306.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2684 + ... + 7923.

It is an arithmetic number, because the mean of its divisors is an integer number (2450448).

Almost surely, 2^27790340 is an apocalyptic number.

27790340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27790340 is an abundant number, since it is smaller than the sum of its proper divisors (31020412).

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

27790340 is a wasteful number, since it uses less digits than its factorization.

27790340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10747 (or 10745 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 32.

The square root of 27790340 is about 5271.6543892786. The cubic root of 27790340 is about 302.8990794036.

The spelling of 27790340 in words is "twenty-seven million, seven hundred ninety thousand, three hundred forty".