27481776 has 80 divisors (see below), whose sum is σ = 82137600. Its totient is φ = 7755264.

The previous prime is 27481759. The next prime is 27481807. The reversal of 27481776 is 67718472.

It is a super-2 number, since 2×27481776² = 1510496024228352, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a nude number because it is divisible by every one of its digits.

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, 29445 + ... + 30363.

It is an arithmetic number, because the mean of its divisors is an integer number (1026720).

Almost surely, 2^27481776 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27481776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41068800).

27481776 is an abundant number, since it is smaller than the sum of its proper divisors (54655824).

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

27481776 is a wasteful number, since it uses less digits than its factorization.

27481776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1026 (or 1020 counting only the distinct ones).

The product of its digits is 131712, while the sum is 42.

The square root of 27481776 is about 5242.3063626614. The cubic root of 27481776 is about 301.7738464461.

The spelling of 27481776 in words is "twenty-seven million, four hundred eighty-one thousand, seven hundred seventy-six".