27319428 has 36 divisors (see below), whose sum is σ = 69237168. Its totient is φ = 9082800.

The previous prime is 27319393. The next prime is 27319429. The reversal of 27319428 is 82491372.

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

It is a super-2 number, since 2×27319428² = 1492702292494368, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 27319392 and 27319401.

It is not an unprimeable number, because it can be changed into a prime (27319429) 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, 18103 + ... + 19553.

Almost surely, 2^27319428 is an apocalyptic number.

It is an amenable number.

27319428 is an abundant number, since it is smaller than the sum of its proper divisors (41917740).

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

27319428 is a wasteful number, since it uses less digits than its factorization.

27319428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1984 (or 1979 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 27319428 is about 5226.7990204331. The cubic root of 27319428 is about 301.1784316021.

It can be divided in two parts, 273 and 19428, that added together give a triangular number (19701 = T₁₉₈).

The spelling of 27319428 in words is "twenty-seven million, three hundred nineteen thousand, four hundred twenty-eight".