20348307 has 64 divisors (see below), whose sum is σ = 37355520. Its totient is φ = 10692000.

The previous prime is 20348287. The next prime is 20348309. The reversal of 20348307 is 70384302.

It is not a de Polignac number, because 20348307 - 2⁷ = 20348179 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (20348309) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 134682 + ... + 134832.

It is an arithmetic number, because the mean of its divisors is an integer number (583680).

Almost surely, 2^20348307 is an apocalyptic number.

20348307 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

20348307 is a deficient number, since it is larger than the sum of its proper divisors (17007213).

20348307 is a wasteful number, since it uses less digits than its factorization.

20348307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221 (or 215 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 20348307 is about 4510.9097752006. The cubic root of 20348307 is about 273.0084528237.

The spelling of 20348307 in words is "twenty million, three hundred forty-eight thousand, three hundred seven".