27699930 has 48 divisors (see below), whose sum is σ = 74510280. Its totient is φ = 7131264.

The previous prime is 27699913. The next prime is 27699941. The reversal of 27699930 is 3999672.

It can be written as a sum of positive squares in 4 ways, for example, as 27531009 + 168921 = 5247^2 + 411^2 .

It is a super-2 number, since 2×27699930² = 1534572244009800, which contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2697 + ... + 7916.

Almost surely, 2^27699930 is an apocalyptic number.

27699930 is an abundant number, since it is smaller than the sum of its proper divisors (46810350).

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

27699930 is a wasteful number, since it uses less digits than its factorization.

27699930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10655 (or 10652 counting only the distinct ones).

The product of its (nonzero) digits is 183708, while the sum is 45.

The square root of 27699930 is about 5263.0722966724. The cubic root of 27699930 is about 302.5702498321.

The spelling of 27699930 in words is "twenty-seven million, six hundred ninety-nine thousand, nine hundred thirty".