27633540 has 96 divisors (see below), whose sum is σ = 85276800. Its totient is φ = 6630400.

The previous prime is 27633539. The next prime is 27633559. The reversal of 27633540 is 4533672.

It is a super-2 number, since 2×27633540² = 1527225065863200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 27633498 and 27633507.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 98200 + ... + 98480.

It is an arithmetic number, because the mean of its divisors is an integer number (888300).

Almost surely, 2^27633540 is an apocalyptic number.

27633540 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 27633540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42638400).

27633540 is an abundant number, since it is smaller than the sum of its proper divisors (57643260).

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

27633540 is a wasteful number, since it uses less digits than its factorization.

27633540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453 (or 451 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 30.

The square root of 27633540 is about 5256.7613603815. The cubic root of 27633540 is about 302.3283273353.

The spelling of 27633540 in words is "twenty-seven million, six hundred thirty-three thousand, five hundred forty".