27426520 has 64 divisors (see below), whose sum is σ = 68221440. Its totient is φ = 9840000.

The previous prime is 27426479. The next prime is 27426527. The reversal of 27426520 is 2562472.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27426527) 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, 36145 + ... + 36895.

It is an arithmetic number, because the mean of its divisors is an integer number (1065960).

Almost surely, 2^27426520 is an apocalyptic number.

27426520 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 27426520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34110720).

27426520 is an abundant number, since it is smaller than the sum of its proper divisors (40794920).

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

27426520 is a wasteful number, since it uses less digits than its factorization.

27426520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 856 (or 852 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 27426520 is about 5237.0335114452. The cubic root of 27426520 is about 301.5714577328.

Adding to 27426520 its reverse (2562472), we get a palindrome (29988992).

The spelling of 27426520 in words is "twenty-seven million, four hundred twenty-six thousand, five hundred twenty".