27402420 has 48 divisors (see below), whose sum is σ = 77995008. Its totient is φ = 7186560.

The previous prime is 27402413. The next prime is 27402439. The reversal of 27402420 is 2420472.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84 + ... + 7403.

It is an arithmetic number, because the mean of its divisors is an integer number (1624896).

Almost surely, 2^27402420 is an apocalyptic number.

27402420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27402420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38997504).

27402420 is an abundant number, since it is smaller than the sum of its proper divisors (50592588).

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

27402420 is a wasteful number, since it uses less digits than its factorization.

27402420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7560 (or 7558 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 21.

The square root of 27402420 is about 5234.7320848349. The cubic root of 27402420 is about 301.4831004061.

Adding to 27402420 its reverse (2420472), we get a palindrome (29822892).

The spelling of 27402420 in words is "twenty-seven million, four hundred two thousand, four hundred twenty".