27420351 has 24 divisors (see below), whose sum is σ = 42966144. Its totient is φ = 15508080.

The previous prime is 27420343. The next prime is 27420359. The reversal of 27420351 is 15302472.

It is an interprime number because it is at equal distance from previous prime (27420343) and next prime (27420359).

It is not a de Polignac number, because 27420351 - 2³ = 27420343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27420359) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14236 + ... + 16046.

It is an arithmetic number, because the mean of its divisors is an integer number (1790256).

Almost surely, 2^27420351 is an apocalyptic number.

27420351 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

27420351 is a deficient number, since it is larger than the sum of its proper divisors (15545793).

27420351 is a wasteful number, since it uses less digits than its factorization.

27420351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1931 (or 1924 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 27420351 is about 5236.4444998491. Note that the first 4 decimals coincide. The cubic root of 27420351 is about 301.5488453874.

The spelling of 27420351 in words is "twenty-seven million, four hundred twenty thousand, three hundred fifty-one".