27974520 has 192 divisors, whose sum is σ = 110185920. Its totient is φ = 6008832.

The previous prime is 27974519. The next prime is 27974543. The reversal of 27974520 is 2547972.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 42514 + ... + 43166.

It is an arithmetic number, because the mean of its divisors is an integer number (573885).

Almost surely, 2^27974520 is an apocalyptic number.

27974520 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 27974520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55092960).

27974520 is an abundant number, since it is smaller than the sum of its proper divisors (82211400).

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

27974520 is a wasteful number, since it uses less digits than its factorization.

27974520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694 (or 687 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 27974520 is about 5289.0944404501. The cubic root of 27974520 is about 303.5667593680.

The spelling of 27974520 in words is "twenty-seven million, nine hundred seventy-four thousand, five hundred twenty".