27820693434 has 8 divisors (see below), whose sum is σ = 55641386880. Its totient is φ = 9273564476.

The previous prime is 27820693427. The next prime is 27820693499. The reversal of 27820693434 is 43439602872.

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

27820693434 is an admirable number.

It is a super-2 number, since 2×27820693434² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2318391114 + ... + 2318391125.

It is an arithmetic number, because the mean of its divisors is an integer number (6955173360).

Almost surely, 2^27820693434 is an apocalyptic number.

27820693434 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

27820693434 is a wasteful number, since it uses less digits than its factorization.

27820693434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4636782244.

The product of its (nonzero) digits is 1741824, while the sum is 48.

The spelling of 27820693434 in words is "twenty-seven billion, eight hundred twenty million, six hundred ninety-three thousand, four hundred thirty-four".