20148347 has 2 divisors, whose sum is σ = 20148348. Its totient is φ = 20148346.

The previous prime is 20148329. The next prime is 20148353. The reversal of 20148347 is 74384102.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20148347 is a prime.

It is not a weakly prime, because it can be changed into another prime (20148367) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10074173 + 10074174.

It is an arithmetic number, because the mean of its divisors is an integer number (10074174).

Almost surely, 2^20148347 is an apocalyptic number.

20148347 is a deficient number, since it is larger than the sum of its proper divisors (1).

20148347 is an equidigital number, since it uses as much as digits as its factorization.

20148347 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 20148347 is about 4488.6910118653. The cubic root of 20148347 is about 272.1112353212. Note that the first 3 decimals are identical.

The spelling of 20148347 in words is "twenty million, one hundred forty-eight thousand, three hundred forty-seven".