20148307 has 4 divisors (see below), whose sum is σ = 20449096. Its totient is φ = 19847520.

The previous prime is 20148269. The next prime is 20148329. The reversal of 20148307 is 70384102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20148307 - 2¹⁹ = 19624019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20148347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150294 + ... + 150427.

It is an arithmetic number, because the mean of its divisors is an integer number (5112274).

Almost surely, 2^20148307 is an apocalyptic number.

20148307 is a deficient number, since it is larger than the sum of its proper divisors (300789).

20148307 is an equidigital number, since it uses as much as digits as its factorization.

20148307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300788.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 20148307 is about 4488.6865562211. The cubic root of 20148307 is about 272.1110552493. Note that the first 3 decimals are identical.

The spelling of 20148307 in words is "twenty million, one hundred forty-eight thousand, three hundred seven".