270000021 has 8 divisors (see below), whose sum is σ = 360422560. Its totient is φ = 179788752.

The previous prime is 269999993. The next prime is 270000023. The reversal of 270000021 is 120000072.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 270000021 - 2⁶ = 269999957 is a prime.

It is a super-2 number, since 2×270000021² = 145800022680000882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 269999961 and 270000006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (270000023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49810 + ... + 54963.

It is an arithmetic number, because the mean of its divisors is an integer number (45052820).

Almost surely, 2^270000021 is an apocalyptic number.

It is an amenable number.

270000021 is a deficient number, since it is larger than the sum of its proper divisors (90422539).

270000021 is a wasteful number, since it uses less digits than its factorization.

270000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105635.

The product of its (nonzero) digits is 28, while the sum is 12.

The square root of 270000021 is about 16431.6773641646. The cubic root of 270000021 is about 646.3304237663.

Adding to 270000021 its reverse (120000072), we get a palindrome (390000093).

The spelling of 270000021 in words is "two hundred seventy million, twenty-one", and thus it is an aban number.