27423816 has 64 divisors (see below), whose sum is σ = 78796800. Its totient is φ = 7791168.

The previous prime is 27423811. The next prime is 27423829. The reversal of 27423816 is 61832472.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27423811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39811 + ... + 40493.

It is an arithmetic number, because the mean of its divisors is an integer number (1231200).

Almost surely, 2^27423816 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 27423816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39398400).

27423816 is an abundant number, since it is smaller than the sum of its proper divisors (51372984).

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

27423816 is a wasteful number, since it uses less digits than its factorization.

27423816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 938 (or 934 counting only the distinct ones).

The product of its digits is 16128, while the sum is 33.

The square root of 27423816 is about 5236.7753436633. The cubic root of 27423816 is about 301.5615466926.

It can be divided in two parts, 274 and 23816, that added together give a triangular number (24090 = T₂₁₉).

The spelling of 27423816 in words is "twenty-seven million, four hundred twenty-three thousand, eight hundred sixteen".