27421992 has 48 divisors (see below), whose sum is σ = 79983540. Its totient is φ = 8437248.

The previous prime is 27421991. The next prime is 27422029. The reversal of 27421992 is 29912472.

It can be written as a sum of positive squares in 2 ways, for example, as 27185796 + 236196 = 5214^2 + 486^2 .

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 (27421991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13713 + ... + 15584.

Almost surely, 2^27421992 is an apocalyptic number.

It is an amenable number.

27421992 is an abundant number, since it is smaller than the sum of its proper divisors (52561548).

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

27421992 is a wasteful number, since it uses less digits than its factorization.

27421992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29322 (or 29315 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 27421992 is about 5236.6011877935. The cubic root of 27421992 is about 301.5548607710.

The spelling of 27421992 in words is "twenty-seven million, four hundred twenty-one thousand, nine hundred ninety-two".