27748320 has 48 divisors (see below), whose sum is σ = 87408720. Its totient is φ = 7399424.

The previous prime is 27748319. The next prime is 27748321. The reversal of 27748320 is 2384772.

It is an interprime number because it is at equal distance from previous prime (27748319) and next prime (27748321).

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27748321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28425 + ... + 29384.

It is an arithmetic number, because the mean of its divisors is an integer number (1821015).

Almost surely, 2^27748320 is an apocalyptic number.

27748320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27748320 is an abundant number, since it is smaller than the sum of its proper divisors (59660400).

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

27748320 is a wasteful number, since it uses less digits than its factorization.

27748320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57827 (or 57819 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 33.

The square root of 27748320 is about 5267.6674154696. The cubic root of 27748320 is about 302.7463376033.

The spelling of 27748320 in words is "twenty-seven million, seven hundred forty-eight thousand, three hundred twenty".