27238207420 has 12 divisors (see below), whose sum is σ = 57200235624. Its totient is φ = 10895282960.

The previous prime is 27238207393. The next prime is 27238207427. The reversal of 27238207420 is 2470283272.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 27238207420.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27238207427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 680955166 + ... + 680955205.

It is an arithmetic number, because the mean of its divisors is an integer number (4766686302).

Almost surely, 2^27238207420 is an apocalyptic number.

27238207420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27238207420 is an abundant number, since it is smaller than the sum of its proper divisors (29962028204).

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

27238207420 is a wasteful number, since it uses less digits than its factorization.

27238207420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1361910380 (or 1361910378 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 37.

The spelling of 27238207420 in words is "twenty-seven billion, two hundred thirty-eight million, two hundred seven thousand, four hundred twenty".