27661392 has 80 divisors (see below), whose sum is σ = 86631360. Its totient is φ = 8380800.

The previous prime is 27661373. The next prime is 27661399. The reversal of 27661392 is 29316672.

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 (27661399) 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, 1842 + ... + 7662.

It is an arithmetic number, because the mean of its divisors is an integer number (1082892).

Almost surely, 2^27661392 is an apocalyptic number.

27661392 is a gapful number since it is divisible by the number (22) 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 27661392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43315680).

27661392 is an abundant number, since it is smaller than the sum of its proper divisors (58969968).

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

27661392 is a wasteful number, since it uses less digits than its factorization.

27661392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5849 (or 5837 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 27661392 is about 5259.4098528257. The cubic root of 27661392 is about 302.4298660349.

The spelling of 27661392 in words is "twenty-seven million, six hundred sixty-one thousand, three hundred ninety-two".