27774072 has 48 divisors (see below), whose sum is σ = 75933000. Its totient is φ = 9170496.

The previous prime is 27774031. The next prime is 27774077. The reversal of 27774072 is 27047772.

It is a super-2 number, since 2×27774072² = 1542798150922368, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27774077) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6079 + ... + 9617.

Almost surely, 2^27774072 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 27774072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37966500).

27774072 is an abundant number, since it is smaller than the sum of its proper divisors (48158928).

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

27774072 is a wasteful number, since it uses less digits than its factorization.

27774072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3660 (or 3653 counting only the distinct ones).

The product of its (nonzero) digits is 38416, while the sum is 36.

The square root of 27774072 is about 5270.1111942728. Note that the first 4 decimals coincide. The cubic root of 27774072 is about 302.8399638495.

The spelling of 27774072 in words is "twenty-seven million, seven hundred seventy-four thousand, seventy-two".