27749412 has 24 divisors (see below), whose sum is σ = 71943200. Its totient is φ = 9249768.

The previous prime is 27749387. The next prime is 27749419. The reversal of 27749412 is 21494772.

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

It is not an unprimeable number, because it can be changed into a prime (27749419) 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, 128362 + ... + 128577.

Almost surely, 2^27749412 is an apocalyptic number.

It is an amenable number.

27749412 is an abundant number, since it is smaller than the sum of its proper divisors (44193788).

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

27749412 is a wasteful number, since it uses less digits than its factorization.

27749412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256952 (or 256944 counting only the distinct ones).

The product of its digits is 28224, while the sum is 36.

The square root of 27749412 is about 5267.7710656406. The cubic root of 27749412 is about 302.7503089508.

The spelling of 27749412 in words is "twenty-seven million, seven hundred forty-nine thousand, four hundred twelve".