27479970 has 96 divisors (see below), whose sum is σ = 83296512. Its totient is φ = 6155136.

The previous prime is 27479957. The next prime is 27479987. The reversal of 27479970 is 7997472.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 32979 + ... + 33801.

It is an arithmetic number, because the mean of its divisors is an integer number (867672).

Almost surely, 2^27479970 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27479970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41648256).

27479970 is an abundant number, since it is smaller than the sum of its proper divisors (55816542).

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

27479970 is a wasteful number, since it uses less digits than its factorization.

27479970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 896 (or 893 counting only the distinct ones).

The product of its (nonzero) digits is 222264, while the sum is 45.

The square root of 27479970 is about 5242.1341074032. The cubic root of 27479970 is about 301.7672358167.

The spelling of 27479970 in words is "twenty-seven million, four hundred seventy-nine thousand, nine hundred seventy".