27400430420 has 48 divisors (see below), whose sum is σ = 62871693696. Its totient is φ = 9947952000.

The previous prime is 27400430419. The next prime is 27400430429. The reversal of 27400430420 is 2403400472.

It is a super-2 number, since 2×27400430420² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 27400430420.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27400430429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40130 + ... + 237510.

It is an arithmetic number, because the mean of its divisors is an integer number (1309826952).

Almost surely, 2^27400430420 is an apocalyptic number.

27400430420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27400430420 is an abundant number, since it is smaller than the sum of its proper divisors (35471263276).

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

27400430420 is a wasteful number, since it uses less digits than its factorization.

27400430420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198032 (or 198030 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 26.

Adding to 27400430420 its reverse (2403400472), we get a palindrome (29803830892).

The spelling of 27400430420 in words is "twenty-seven billion, four hundred million, four hundred thirty thousand, four hundred twenty".