27290772 has 36 divisors (see below), whose sum is σ = 69159636. Its totient is φ = 9073920.

The previous prime is 27290761. The next prime is 27290773. The reversal of 27290772 is 27709272.

It can be written as a sum of positive squares in 2 ways, for example, as 3437316 + 23853456 = 1854^2 + 4884^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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 (27290773) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19372 + ... + 20732.

It is an arithmetic number, because the mean of its divisors is an integer number (1921101).

Almost surely, 2^27290772 is an apocalyptic number.

It is an amenable number.

27290772 is an abundant number, since it is smaller than the sum of its proper divisors (41868864).

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

27290772 is a wasteful number, since it uses less digits than its factorization.

27290772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1928 (or 1923 counting only the distinct ones).

The product of its (nonzero) digits is 24696, while the sum is 36.

The square root of 27290772 is about 5224.0570440990. The cubic root of 27290772 is about 301.0730903471.

The spelling of 27290772 in words is "twenty-seven million, two hundred ninety thousand, seven hundred seventy-two".